C Programming PYQs GATE CS

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 <= i <= 9. The value returned by SimpleFunction(Z,10,2) 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 2⁴⁰ is

Consider the following C program:

#include <stdio.h>
void fun1(char *s1, char *s2) {
  char *temp;
  temp = s1;
  s1 = s2;
  s2 = temp;
}
void fun2(char **s1, char **s2) {
  char *temp;
  temp = *s1;
  *s1 = *s2;
  *s2 = temp;
}
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 program

#include <stdio.h>
int main ()  {
    int  a[4] [5] = {{1, 2, 3, 4, 5},
                    {6, 7,8, 9, 10},
                    {11, 12, 13, 14, 15},
                    {16, 17,18, 19, 20}};
    printf(“%d\n”, *(*(a+**a+2)+3));
    return(0);
}

The output is

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);
}
 

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) ;
}

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

Note -

This question was Numerical Type.

Consider the following 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 program.

#include < stdio.h >
int main( ) 
{
    int arr[4][5];
    int  i, j;
    for (i=0; i<4; i++) 
    {
        for (j=0; j<5; j++) 
        {
            arr[i][j] = 10 * i + j;
        }
    }
    printf("%d", *(arr[1]+9));
    return 0;
} 

What is the output of the above program?

Consider the following ANSI C function:

int SomeFunction (int x, int y)
{
    if ((x==1) || (y==1)) return 1;
    if (x==y) return x;
    if (x > y) return SomeFunction(x-y, y);
    if (y > x) return SomeFunction (x, y-x);
 
} 

The value returned by SomeFunction (15, 255) is __________ .

Consider the following ANSI C program

#include 
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 program.

#include <stdio.h>
struct Ournode {
  char x, y, z;
};

int main() {
  struct Ournode p = {'1', '0', 'a' + 2};
  struct Ournode *q = &p;
  printf("%c, %c", *((char *)q + 1), *((char *)q + 2));
  return 0;
}

The output of this program is: