C Programming

The value printed by the following program is ________.

void f(int* p, int m){
    m = m + 5;
    *p = *p + m;
    return;
}
void main(){
    int i=5, j=10;
    f(&i, j);
    printf("%d", i+j);
}

The following function computes $X^Y$ for positive integers X and Y.

int exp(int X, int Y) {
    int res = 1, a = X, b = Y;

    while ( b != 0 ){
        if ( b%2 == 0) { a = a*a; b = b/2; }
        else           { res = res*a; b = b-1; }
    }
    return res;
}

Which one of the following conditions is TRUE before every iteration of the loop?

Consider the following program:

int f(int *p, int n)
{
    if (n <= 1) return 0;
    else return max(f(p+1,n-1),p[0]-p[1]);
}
int main()
{
    int a[] = {3,5,2,6,4};
    printf("%d", f(a,5));
}

*Note*: max(x,y) returns the maximum of x and y. The value printed by this program is ________.

Consider the C program below.

#include <stdio.h>
int *A, stkTop;

int stkFunc(int opcode, int val)
{
    static int size=0, stkTop=0;

    switch (opcode) {
        case -1: size = val; break;
        case  0: if (stkTop < size) A[stkTop++] = val; break;
        default: if (stkTop) return A[--stkTop];
    }
    return -1;
}

int main()
{
    int B[20]; A = B; stkTop = -1;

    stkFunc (-1, 10);
    stkFunc ( 0, 5);
    stkFunc ( 0, 10);
    printf ("%d\n", stkFunc(1, 0) + stkFunc(1, 0));
}

The value printed by the above program is _____.

Consider the function func shown below:

int func(int num) {
    int count = 0;
    while (num) {
        count++;
        num>>= 1;
    }
    return (count);
}

The value returned by func(435) is _____.

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?

Consider the C function given below.

int f(int j)
{
    static int i = 50;
    int k;
    if (i == j)
    {
        printf("something");
        k = f(i);
        return 0;
    }
    else return 0;
}

Which one of the following is TRUE?