Consider the following C functions.
int tob (int b, int* arr) {
int i;
for (i = 0; b>0; i++) {
if (b%2) arr [i] = 1;
else arr[i] = 0;
b = b/2;
}
return (i);
}
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int pp(int a, int b) {
int arr[20];
int i, tot = 1, ex, len;
ex = a;
len = tob(b, arr);
for (i=0; i<len ; i++) {
if (arr[i] ==1)
tot = tot * ex;
ex= ex*ex;
}
return (tot) ;
}
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The value returned by $pp(3,4)$ is _______.
