C Programming

Consider the following C statements:

char *str1 = "Hello;    /* Statement S1 */
char *str2 = "Hello;";  /* Statement S2 */
int *str3 = "Hello";    /* Statement S3 */

Which of the following options is/are correct?

Consider the following program in C:

#include <stdio.h>

void func(int i, int j) {
  if(i < j) {
    int i = 0;
    while (i < 10) {
      j += 2;
      i++;
    }
  }
  printf("%d", i);
}

int main() {
  int i = 9, j = 10;
  func(i, j);
  return 0;
}

The output of the program is _________. (*answer in integer*) *Note*: Assume that the program compiles and runs successfully.

#include <stdio.h>
void foo(int *p, int x){
    *p=x;
}
int main(){
    int *z;
    int a = 20, b = 25;
    z = &a;
    foo(z,b);
    printf("%d",a);
    return 0;
}

The output of the given C program is __________. (Answer in integer)

Consider the following C program:

#include <stdio.h>
int main(){
   int a = 6;
   int b = 0;
   while(a < 10) {
      a = a / 12 + 1;
      a += b;}
   printf("%d", a);
   return 0;}

Which one of the following statements is CORRECT?

Consider the following C program:

#include <stdio.h>
void fX();
int main(){
   fX();
   return 0;}
void fX(){
   char a;
   if((a=getchar()) != '\n')
       fX();
   if(a != '\n')
       putchar(a);}

Assume that the input to the program from the command line is 1234 followed by a newline character. Which one of the following statements is CORRECT?

Consider the C code fragment given below.

typedef struct node {
  int data;
  node* next;
} node;

void join(node* m, node* n){
  node* p = n;
  while(p->next != NULL) {
    p = p->next;
  }
  p->next = m;
}

Assuming that m and n point to valid NULL-terminated linked lists, invocation of join will

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 = (int *)malloc(sizeof(int));
             if(NULL == x) return;
             x = assignval(x,10);
       }
      printf("%d\n", *x);
      free(x);
}

The code suffers from which one of the following problems:

Consider the following C program.

void f(int, short);
void main()
{
     int i = 100;
     short s = 12;
     short *p = &s;
     __________ ;    // call to f()
}

Which one of the following expressions, when placed in the blank above, will NOT result in a type checking error?

Consider the following C program.

#include<stdio.h>

void mystery(int *ptra, int *ptrb) {
     int *temp;
     temp = ptrb;
     ptrb = ptra;
     ptra = temp;
}
int main() {
     int a=2016, b=0, c=4, d=42;
     mystery(&a, &b);
     if (a < c)
          mystery(&c, &a);
     mystery(&a, &d);
     printf("%d\n", a);
}

The output of the program is ________.

The output of the following C program is _____.

void f1(int a, int b) {
    int c;
    c=a; a=b; b=c;
}
void f2(int *a, int *b) {
    int c;
    c=*a; *a=*b; *b=c;
}
int main(){
    int a=4, b=5, c=6;
    f1(a,b);
    f2(&b, &c);
    printf("%d",c-a-b);
}

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?