Recent questions tagged programming - GATE CSE Doubts

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Made Easy Programmin And Data Structure Practise Set

asked 36 minutes ago in Programming by Prakhar Garg (8 points) | 2 views

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Madeeasy Programming and Data Structure Notes
In Dynamic Scoping , an extern variable will take value from Global Variable or Local variable , please tell me with respect to following question and also the printf results?

asked Jul 3 in Programming by Prakhar Garg (8 points) | 18 views

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Programming: Abstraction
Which of the following statement(s) is/are TRUE? (i). Abstraction principle includes use abstraction whenever possible to avoid duplication (ii). Encapsulation and abstraction differ as binding and hiding respectively (iii). Logical, Physical and View are level of abstraction

asked May 29 in Programming by luc_Bloodstone (38 points) | 10 views

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Programming : Encapsulation
Which among the following would destroy the encapsulation mechanism if it was allowed in programming? 1. Using access declaration for local variable of main() function 2. Using access declaration for private members of base class 3.Using access declaration for public members of base class 4.Using access declaration for global variables

asked May 29 in Programming by luc_Bloodstone (38 points) | 2 views

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C programming Control Statement doubt
#include<stdio.h> int main() { char ch=’a’; switch(ch) { case ‘a’ && 1: printf(“Hello”); case ’b’ && 1: printf(“world”); break; default: printf(“GATE”); } }

asked May 13 in Programming by VIKAS PARA (6 points) | 22 views

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C programming airport question
Write a program You need to simulate the working of an airport. Let us consider a small but busy airport with two runways, one usually used for landings and one usually used for takeoffs. Planes arrive ready to land or ready to take off ... be stopped and both runways used to clear the backlog of landing planes. The simulation should run through many units of time

asked May 8 in Programming by Tanki (6 points) | 41 views

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GATE2017-1-36 Video Solution
Consider the C functions foo and bar given below: int foo(int val) { int x=0; while(val > 0) { x = x + foo(val--); } return val; } int bar(int val) { int x = 0; while(val > 0) { x= ... result in: Return of $6$ and $6$ respectively. Infinite loop and abnormal termination respectively. Abnormal termination and infinite loop respectively. Both terminating abnormally.

asked Apr 19 in Programming by admin (3.6k points) | 6 views

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GATE2017-1-53 Video Solution
Consider the following C program. #include<stdio.h> #include<string.h> void printlength(char *s, char *t) { unsigned int c=0; int len = ((strlen(s) - strlen(t)) > c) ? strlen(s) : strlen(t); printf("%d\n", len); } ... defined in $string.h$ as returning a value of type $size\_t$, which is an unsigned int. The output of the program is __________ .

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2015-1-35 Video Solution
What is the output of the following C code? Assume that the address of $x$ is $2000$ (in decimal) and an integer requires four bytes of memory. int main () { unsigned int x [4] [3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}, {10, 11, 12}}; printf ("%u, %u, %u", x + 3, *(x + 3), *(x + 2) + 3); } $2036, 2036, 2036$ $2012, 4, 2204$ $2036, 10, 10$ $2012, 4, 6$

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2017-1-13 Video Solution
Consider the following C code: #include<stdio.h> int *assignval (int *x, int val) { *x = val; return x; } void main () { int *x = malloc(sizeof(int)); if (NULL == x) return; x = assignval (x,0); if (x) ... $x == NULL$ and not as shown. compiles successfully but execution may result in dangling pointer. compiles successfully but execution may result in memory leak.

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2017-1-55 Video Solution
The output of executing the following C program is _______________ . #include<stdio.h> int total(int v) { static int count = 0; while(v) { count += v&1; v >>= 1; } return count; } void main() { static int x=0; int i=5; for(; i>0; i--) { x = x + total(i); } printf("%d\n", x); }

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2006-IT-49 Video Solution
Which one of the choices given below would be printed when the following program is executed ? #include <stdio.h> struct test { int i; char *c; }st[] = {5, "become", 4, "better", 6, "jungle", 8, "ancestor", 7, " ... $\text{etter, u, 6, ungle}$ $\text{cetter, k, 6, jungle}$ $\text{etter, u, 8, ncestor}$

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2003-2 Video Solution
Assume the following C variable declaration: int *A[10], B[10][10]; Of the following expressions: $A[2]$ $A[2][3]$ $B[1]$ $B[2][3]$ which will not give compile-time errors if used as left hand sides of assignment statements in a C program? I, II, and IV only II, III, and IV only II and IV only IV only

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2015-3-48 Video Solution
Consider the following C program: #include<stdio.h> int main() { int i, j, k = 0; j=2 * 3 / 4 + 2.0 / 5 + 8 / 5; k-=--j; for (i=0; i<5; i++) { switch(i+k) { case 1: case 2: printf("\n%d", i+k); case 3: printf("\n%d", i+k); default: printf("\n%d", i+k); } } return 0; } The number of times printf statement is executed is _______.

asked Apr 19 in Programming by admin (3.6k points) | 5 views

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GATE2006-IT-50 Video Solution
Which one of the choices given below would be printed when the following program is executed? #include <stdio.h> void swap (int *x, int *y) { static int *temp; temp = x; x = y; y = temp; } void printab () { static int i, a = -3, b = -6; i = 0; while (i <= 4) { if ((i++)%2 == ... $a = 12, b = 9$ $a = 3, b = 6$ $a = 3, b = 6$ $a = 6, b = 3$ $a = 15, b = 12$

asked Apr 19 in Programming by admin (3.6k points) | 3 views

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GATE2001-2.18 Video Solution
Consider the following three C functions: $[P1]$ int *g(void) { int x = 10; return (&x); } $[P2]$ int *g(void) { int *px; *px = 10; return px; } $[P3]$ int *g(void) { int *px; px = (int*) malloc (sizeof(int)); *px = 10; ... of the above three functions are likely to cause problems with pointers? Only $P3$ Only $P1$ and $P3$ Only $P1$ and $P2$ $P1, P2$ and $P3$

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2005-81a Video Solution
double foo(int n) { int i; double sum; if(n == 0) { return 1.0; } else { sum = 0.0; for(i = 0; i < n; i++) { sum += foo(i); } return sum; } } The space complexity of the above code is? $O(1)$ $O(n)$ $O(n!)$ $n^n$

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2017-1-35 Video Solution
Consider the following two functions. void fun1(int n) { if(n == 0) return; printf("%d", n); fun2(n - 2); printf("%d", n); } void fun2(int n) { if(n == 0) return; printf("%d", n); fun1(++n); printf("%d", n); } The output printed when $\text{fun1}(5)$ is called is $53423122233445$ $53423120112233$ $53423122132435$ $53423120213243$

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2000-1.17, ISRO2015-79 Video Solution
Consider the following C declaration: struct ( short x[5]; union { float y; long z; } u; )t; Assume that the objects of the type short, float and long occupy $2$ bytes, $4$ bytes and $8$ bytes, respectively. The memory requirement for variable $t$, ignoring alignment consideration, is: $22$ bytes $14$ bytes $18$ bytes $10$ bytes

asked Apr 19 in Programming by admin (3.6k points) | 1 view

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GATE2017-2-43 Video Solution
Consider the following snippet of a C program. Assume that swap $(\&x, \&y)$ exchanges the content of $x$ and $y$: int main () { int array[] = {3, 5, 1, 4, 6, 2}; int done =0; int i; while (done==0) { done =1; for (i=0; i<=4; i++) ... [i-1]) { swap(&array[i], &array[i-1]); done =0; } } } printf( %d , array[3]); } The output of the program is _______

asked Apr 19 in Programming by admin (3.6k points) | 1 view

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GATE2006-57 Video Solution
Consider this C code to swap two integers and these five statements: the code void swap (int *px, int *py) { *px = *px - *py; *py = *px + *py; *px = *py - *px; } S1: will generate a compilation error S2: may generate a ... procedure correctly for some but not all valid input pointers S5: may add or subtract integers and pointers S1 S2 and S3 S2 and S4 S2 and S5

asked Apr 19 in Programming by admin (3.6k points) | 3 views

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GATE2015-3-26 Video Solution
Consider the following C program #include<stdio.h> int main() { static int a[] = {10, 20, 30, 40, 50}; static int *p[] = {a, a+3, a+4, a+1, a+2}; int **ptr = p; ptr++; printf("%d%d", ptr-p, **ptr); } The output of the program is _______.

asked Apr 19 in Programming by admin (3.6k points) | 3 views

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GATE2019-27 Video Solution
Consider the following C program: #include <stdio.h> int r() { static int num=7; return num--; } int main() { for (r();r();r()) printf(“%d”,r()); return 0; } Which one of the following values will be displayed on execution of the programs? $41$ $52$ $63$ $630$

asked Apr 19 in Programming by admin (3.6k points) | 6 views

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GATE2014-2-11 Video Solution
Suppose $n$ and $p$ are unsigned int variables in a C program. We wish to set p to $^nC_3$. If $n$ is large, which one of the following statements is most likely to set p correctly? $p = n * (n-1) * (n-2) / 6;$ $p = n * (n-1) / 2 * (n-2) / 3;$ $p = n * (n-1) / 3 * (n-2) / 2;$ $p = n * (n-1) * (n-2) / 6.0;$

asked Apr 19 in Programming by admin (3.6k points) | 1 view

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GATE2018-2 Video Solution
Consider the following C program: #include<stdio.h> struct Ournode{ char x, y, z; }; int main() { struct Ournode p={'1', '0', 'a'+2}; struct Ournode *q=&p; printf("%c, %c", *((char*)q+1), *((char*)q+2)); return 0; } The output of this program is: 0, c 0, a+2 '0', 'a+2' '0', 'c'

asked Apr 19 in Programming by admin (3.6k points) | 3 views

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GATE2018-29 Video Solution
#include<stdio.h> void fun1(char* s1, char* s2){ char* temp; temp = s1; s1 = s2; s2 = temp; } void fun2(char** s1, char** s2){ char* temp; temp = *s1; *s1 = *s2; *s2 = temp; } int main(){ char *str1="Hi", *str2 = "Bye"; fun1 ... of the program above is: $\text{Hi Bye Bye Hi}$ $\text{Hi Bye Hi Bye}$ $\text{Bye Hi Hi Bye}$ $\text{Bye Hi Bye Hi}$

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2005-1, ISRO2017-55 Video Solution
What does the following C-statement declare? int (*f) (int * ); A function that takes an integer pointer as argument and returns an integer A function that takes an integer as argument and returns an integer pointer A pointer ... pointer as argument and returns an integer A function that takes an integer pointer as argument and returns a function pointer

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2011-22 Video Solution
What does the following fragment of C program print? char c[] = "GATE2011"; char *p = c; printf("%s", p + p[3] - p[1]); $GATE2011$ $E2011$ $2011$ $011$

asked Apr 19 in Programming by admin (3.6k points) | 4 views

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GATE2005-32 Video Solution
Consider the following C program: double foo (double); /* Line 1 */ int main() { double da, db; //input da db = foo(da); } double foo (double a) { return a; } The above code compiled without any error ... or error some compiler-warnings not leading to unintended results some compiler-warnings due to type-mismatch eventually leading to unintended results compiler errors

asked Apr 19 in Programming by admin (3.6k points) | 1 view

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GATE2008-60 Video Solution
What is printed by the following C program? int f(int x, int *py, int **ppz) { int y, z; **ppz += 1; z = **ppz; // corrected z = *ppz; to z = **ppz; *py += 2; y = *py; x += 3; return x+y+z; } void main() { int c, *b, **a; c = 4; b = &c; a = &b; printf("%d", f(c, b, a)); } $18$ $19$ $21$ $22$

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2018-32 Video Solution
Consider the following C code. Assume that unsigned long int type length is $64$ bits. unsigned long int fun(unsigned long int n) { unsigned long int i, j=0, sum = 0; for( i=n; i>1; i=i/2) j++; for( ; j>1; j=j/2) sum++; return sum; } The value returned when we call fun with the input $2^{40}$ is: $4$ $5$ $6$ $40$

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2014-1-10 Video Solution
Consider the following program in C language: #include <stdio.h> main() { int i; int*pi = &i; scanf("%d",pi); printf("%d\n", i+5); } Which one of the following statements is TRUE? Compilation fails. Execution results ... $5$ more than the address of variable $i$. On execution, the value printed is $5$ more than the integer value entered.

asked Apr 19 in Programming by admin (3.6k points) | 3 views

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GATE2017-2-37 Video Solution
Consider the C program fragment below which is meant to divide $x$ by $y$ using repeated subtractions. The variables $x$, $y$, $q$ and $r$ are all unsigned int. while (r >= y) { r=r-y; q=q+1; } Which of the following conditions on the variables $x, y, q$ and $r$ before the ... $(q==0) \ \&\& \ (y>0)$

asked Apr 19 in Programming by admin (3.6k points) | 1 view

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GATE2014-2-40 Video Solution
Consider the following function. double f(double x){ if( abs(x*x - 3) < 0.01) return x; else return f(x/2 + 1.5/x); } Give a value $q$ (to $2$ decimals) such that $f(q)$ will return $q$:_____.

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2015-2-15 Video Solution
Consider the following function written in the C programming langauge : void foo(char *a) { if (*a && *a != ' ') { foo(a+1); putchar(*a); } } The output of the above function on input "$ABCD \ EFGH$" is $ABCD \ EFGH$ $ABCD$ $HGFE \ DCBA$ $DCBA$

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2015-1-33 Video Solution
Consider the following pseudo code, where $x$ and $y$ are positive integers. begin q := 0 r := x while r ≥ y do begin r := r - y q := q + 1 end end The post condition that needs to be satisfied after the program terminates is $\{ r = qx + y \wedge r < y\}$ ... $\{ y = qx + r \wedge 0 < r < y\}$ $\{ q + 1 < r - y \wedge y > 0\}$

asked Apr 19 in Programming by admin (3.6k points) | 3 views

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GATE2008-IT-51 Video Solution
Consider the C program given below. What does it print? #include <stdio.h> int main () { int i, j; int a [8] = {1, 2, 3, 4, 5, 6, 7, 8}; for(i = 0; i < 3; i++) { a[i] = a[i] + 1; i++; } i--; for (j = 7; j > 4; j--) { int i = j/2; a[i] = a[i] - 1; } printf ("%d, %d", i, a[i]); } $2, 3$ $2, 4$ $3, 2$ $3, 3$

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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GATE2004-31, ISRO2008-40 Video Solution
Consider the following C function: int f(int n) { static int i = 1; if(n >= 5) return n; n = n+i; i++; return f(n); } The value returned by $f(1)$ is: $5$ $6$ $7$ $8$

asked Apr 19 in Programming by admin (3.6k points) | 1 view

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GATE2003-89 Video Solution
Consider the C program shown below: #include<stdio.h> #define print(x) printf("%d", x) int x; void Q(int z) { z+=x; print(z); } void P(int *y) { int x = *y + 2; Q(x); *y = x - 1; print(x); } main(void) { x = 5; P(&x); print(x); } The output of this program is: $12 \ 7 \ 6$ $22 \ 12 \ 11$ $14 \ 6 \ 6$ $7 \ 6 \ 6$

asked Apr 19 in Programming by admin (3.6k points) | 1 view

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GATE2015-3-54 Video Solution
Consider the following C program: #include<stdio.h> int f1(void); int f2(void); int f3(void); int x=10; int main() { int x=1; x += f1() + f2 () + f3() + f2(); printf("%d", x); return 0; } int f1() { int x = 25; x++; return x;} int f2() { static int x = 50; x++; return x;} int f3() { x *= 10; return x;} The output of the program is ______.

asked Apr 19 in Programming by admin (3.6k points) | 2 views

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