Quiz- 1

Consider following given the code and predict its output.

main()

{

int num[ ] = {1,4,8,12,16};

int *a,*b;

int i;

a=num;

b=num+2;

i=*a+1;

printf("%d,%d,%d\n",i,*a,*b);

}

What is stderr?

What will be the output of the program?



#include



int main()

{

    int i;

    char c;

    for(i=1; i<=5; i++)

    {

        scanf("%c", &c); /* given input is 'b' */

        ungetc(c, stdout);

        printf("%c", c);

        ungetc(c, stdin);

    }

    return 0;

}

What will be the output of the program?



#include

int main()

{

int i=-3, j=2, k=0, m;

m = ++i || ++j && ++k;

printf("%d, %d, %d, %d\n", i, j, k, m);

return 0;

}

What will be the output of the program?



#include

int main()

{

char ch;

ch = 'A';

printf("The letter is");

printf("%c", ch >= 'A' && ch <= 'Z' ? ch + 'a' - 'A':ch); 

printf("Now the letter is"); printf("%c\n", ch >= 'A' && 

ch <= 'Z' ? ch : ch + 'a' - 'A');

return 0;

}

Point out the error in the program?



#include



int main()

{

int a[] = {10, 20, 30, 40, 50};

int j;

for(j=0; j<5; j++)

{

printf("%d\n", a);

a++;

}

return 0;

}

What will be the output of the program ?



#include

void fun(int **p);



int main()

{

int a[3][4] = {1, 2, 3, 4, 4, 3, 2, 8, 7, 8, 9, 0};

int *ptr;

ptr = &a[0][0];

fun(&ptr);

return 0;

}

void fun(int **p)

{

printf("%d\n", **p);

}

Which of the following statements are correct about an array?

1: The array int num[26]; can store 26 elements.

2: The expression num[1] designates the very first element in the array.

3: It is necessary to initialize the array at the time of declaration.

4: The declaration num[SIZE] is allowed if SIZE is a macro.

Identify which of the following are declarations

1 : extern int x;

2 : float square ( float x ) { ... }

3 : double pow(double, double);

Which of the following function is used to find the first occurrence

of a given string in another string?