C Programming

Match the following:

(P) static char var;          (i)   Sequence of memory locations to store addresses
(Q) m = malloc(10);           (ii)  A variable located in data section of memory
    m = NULL;
(R) char *ptr[10];            (iii) Request to allocate a CPU register to store data
(S) register int var1;        (iv)  A lost memory which cannot be freed

Consider the following function implemented in C:

void printxy(int x, int y) {
       int *ptr;
       x = 0;
       ptr = &x;
       y = *ptr;
       *ptr = 1;
       printf("%d,%d",x,y);
}

The output of invoking printxy(1,1) is

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 execution of the fragment will ensure that the loop terminates in a state satisfying the condition x == (y*q + r)?

Consider the following snippet of a C program. Assume that swap(&x, &y) exchanges the contents 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++) {
                  if (array[i] < array[i+1]) {
                        swap(&array[i], &array[i+1]);
                        done = 0;
                  }
            }
            for (i=5; i>=1; i--) {
                  if (array[i] > array[i-1]) {
                        swap(&array[i], &array[i-1]);
                        done = 0;
                  }
            }
      }
      printf("%d",array[3]);
}

The output of the program is ________.

Consider the following C Program.

#include<stdio.h>
int main() {
        int m = 10;
        int n, n1;
        n = ++m;
        n1 = m++;
        n--;
        --n1;
        n -= n1;
        printf("%d", n);
        return 0;
}

The output of the program is ________.

Consider the following C Program.

#include<stdio.h>
#include<string.h>
int main() {
        char* c = "GATECSIT2017";
        char* p = c;
        printf("%d", (int)strlen(c+2[p]-6[p]-1));
        return 0;
}

The output of the program is ________.