C Programming

Consider the following ANSI-C program.

#include <stdio.h>
int main(){
  int *ptr, a, b, c;
  a=5; b=11; c=20;
  ptr=&a; *ptr=c; ptr=&c;
  a=*(&b); c=*ptr-a;
  printf("%d",c);
  return(0);
}

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

#include <stdio.h>
int foo(int S[],int size){
    if(size == 0) return 0;
    if(size == 1) return 1;
    if(S[0] != S[1]) return 1+foo(S+1,size-1);
    return foo(S+1,size-1);
}
int main(){
    int A[]={0,1,2,2,2,0,0,1,1};
    printf("%d",foo(A,9));
    return 0;
}

The value printed by the given C program is _______. (Answer in integer)

Consider the following C program:

#include <stdio.h>
int gate (int n) {
    int d, t, newnum, turn;
    newnum = turn = 0; t=1;
    while (n>=t) t *= 10;
    t /=10;
    while (t>0) {
        d = n/t;
        n = n%t;
        t /= 10;
        if (turn) newnum = 10*newnum + d;
        turn = (turn + 1) % 2;
    }
    return newnum;
}
int main () {
    printf ("%d", gate(14362));
    return 0;
}

The value printed by the given C program is _______. (Answer in integer)

Consider the following C program:

#include <stdio.h>
int main(){
  int a;
  int arr[5] = {30,50,10};
  int *ptr;
  ptr = &arr[0] + 1;
  a = *ptr;
  (*ptr)++;
  ptr++;
  printf("%d", a + (*ptr) + arr[1]);
  return 0;
}

The output of the above program is ___________. (Answer in integer)

Consider the following C program:

#include <stdio.h>

int g(int n) {
    return (n+10);
}

int f(int n) {
    return g(n*2);
}

int main() {
    int sum, n;
    sum=0;
    for (n=1; n<3; n++)
        sum += g(f(n));
    printf ("%d", sum);
    return 0;
}

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

Consider the following C function definition.

int f(int x, int y) {
  for (int i=0; i<y; i++) {
    x=x+x+y;
  }
  return x;
}

Which of the following statements is/are TRUE about the above function?

What is the output of the following C program?

#include <stdio.h>
int main() {
    double a[2]={20.0, 25.0}, *p, *q;
    p = a;
    q = p + 1;
    printf("%d,%d", (int)(q - p), (int)(*q - *p));
    return 0;}

What is printed by the following ANSI C program?

#include<stdio.h>
int main(int argc, char *argv[])
{
  int a[3][3][3] =
  {{1, 2, 3, 4, 5, 6, 7, 8, 9},
   {10, 11, 12, 13, 14, 15, 16, 17, 18},
   {19, 20, 21, 22, 23, 24, 25, 26, 27}};
  int i = 0, j = 0, k = 0;
  for( i = 0; i < 3; i++ ){
    for(k = 0; k < 3; k++ )
      printf("%d ", a[i][j][k]);
    printf("\n");
  }
  return 0;
}

What is printed by the following ANSI C program?

#include<stdio.h>
int main(int argc, char *argv[]){
    char a = 'P';
    char b = 'x';
    char c = (a & b) + '*';
    char d = (a | b) - '-';
    char e = (a ^ b) + '+';
    printf("%c %c %c\n", c, d, e);
    return 0;
}

ASCII encoding for relevant characters is given in the figure.

Consider the following ANSI C program.

#include <stdio.h>
int main()
{
    int i, j, count;
    count = 0;
    i = 0;
    for (j = -3; j <= 3; j++)
    {
        if ((j >= 0) && (i++))
            count = count + j;
    }
    count = count + i;
    printf("%d", count);
    return 0;
}

Which one of the following options is correct?

Consider the following ANSI C function:

int SimpleFunction(int Y[], int n, int x)
{
  int total = Y[0], loopIndex;
  for (loopIndex = 1; loopIndex <= n - 1; loopIndex++)
       total = x * total + Y[loopIndex];
  return total;
}

Let Z be an array of 10 elements with Z[$i$]=1, for all $i$ such that $0 le i le 9$. The value returned by SimpleFunction(Z, 10, 2) is __________.

Consider the following ANSI C program:

#include <stdio.h>
#include <stdlib.h>
struct Node{
        int value;
        struct Node *next;};
int main(){
    struct Node *boxE, *head, *boxN; int index = 0;
    boxE = head = (struct Node *) malloc(sizeof(struct Node));
    head->value = index;
    for (index = 1; index <= 3; index++){
        boxN = (struct Node *) malloc(sizeof(struct Node));
        boxE->next = boxN;
        boxN->value = index;
        boxE = boxN; }
    for (index = 0; index <= 3; index++) {
        printf("Value at index %d is %d\n", index, head->value);
        head = head->next;
        printf("Value at index %d is %d\n", index+1, head->value); } }

Which one of the statements below is correct about the program?

Consider the following ANSI C program.

#include <stdio.h>

int foo(int x, int y, int q)
{
    if ((x <= 0) && (y <= 0))
        return q;
    if (x <= 0)
        return foo(x, y-q, q);
    if (y <= 0)
        return foo(x-q, y, q);
    return foo(x, y-q, q) + foo(x-q, y, q);
}

int main()
{
    int r = foo(15,15,10);
    printf("%d", r);
    return 0;
}

The output of the program upon execution is ________.

Consider the following C functions.

int fun1(int n) {               int fun2(int n) {
  static int i = 0;                static int i = 0;
  if (n > 0) {                     if (n > 0) {
     ++i;                             i = i + fun1(n);
     fun1(n-1);                       fun2(n-1);
  }                                }
  return(i);                       return(i);
}                                }

The return value of fun2(5) is __________.

Consider the following C functions.

int tob(int b, int* arr){          int pp(int a,int b) {
   int i;                              int arr[20];
   for(i=0; b>0; i++){                 int i, tot = 1, ex, len;
      if(b%2) arr[i]=1;                ex = a;
      else    arr[i]=0;                len = tob(b,arr);
      b = b/2;                         for(i=0; i<len; i++){
   }                                      if(arr[i]==1)
   return(i);                                tot = tot * ex;
}                                         ex = ex * ex;
                                       }
                                       return(tot);
                                    }

The value returned by pp(3,4) is ____________.

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?

Consider the following C program:

#include <stdio.h>
int main(){
    float sum = 0.0, j = 1.0, i = 2.0;
    while (i/j > 0.0625){
        j = j + j;
        sum = sum + i/j;
        printf("%f\n", sum);
    }
    return 0;
}

The number of times the variable sum will be printed, when the above program is executed, is _____.

Consider the following C program:

#include <stdio.h>
int main()
{
    int a[] = {2, 4, 6, 8, 10};
    int i, sum = 0, *b = a + 4;
    for (i = 0; i < 5; i++)
        sum = sum + (*b - i) - *(b - i);
    printf ("%d\n", sum);
    return 0;
}

The output of the above C program is _____.

Consider the following C program:

#include<stdio.h>

void fun1(char *s1, char *s2){
    char *tmp;
    tmp = s1;
    s1 = s2;
    s2 = tmp;
}
void fun2(char **s1, char **s2){
    char *tmp;
    tmp = *s1;
    *s1 = *s2;
    *s2 = tmp;
}
int main(){
    char *str1 = "Hi", *str2 = "Bye";
    fun1(str1, str2);   printf("%s %s ", str1, str2);
    fun2(&str1, &str2); printf("%s %s", str1, str2);
    return 0;
}

The output of the program above is

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