Pseudo Codes 3- Based On Format Specifiers and Variables Decleration

   

                                    

                     

1. 

#include <stdio.h>

int main()

{

    char ch = 'A';

    printf("%d\n", ch);

    return 0;

}

1. A
2. 'A'
3. 65
4. 97

Ans- 3

2.

Which of the following is not a valid declaration in C ?

1.short int x;

2.signed short x;

3.short x;

4.unsigned short x;

1. 3 and 4
2. 1
3. 2
4. All are valid

Ans- 4

3.

#include <stdio.h>

int i;

int main()

{

    if (i)

        ;

    else

        printf("Ëlse");

    return 0;

}

1. if block is executed.
2. else block is executed
3. It is unpredictable as i is not initialized.
4. Error: misplaced else

Ans- 2

4.

void swap(int x, int y)

{

    int tmp;

    tmp = x;

    x = y;

    y = tmp;

}

1. Call swap (a, b)
2. Call swap (&a, &b)
3. swap(a, b) cannot be used as it does not return any value
4. swap(a, b) cannot be used as the parameters passed by value

Ans- 4

5.

What will be the output of the following code snippet?

#include <stdio.h>

int foo(int* a, int* b)

{

    int sum = *a + *b;

    *b = *a;

    return *a = sum - *b;

}

int main()

{

    int i = 0, j = 1, k = 2, l;

    l = i++ || foo(&j, &k);

    printf("%d %d %d %d", i, j, k, l);

    return 0;

}

1. 1 2 1 1
2. 1 1 2 1
3. 1 2 2 1
4. 1 2 2 2

Ans- 1