RVS_SOLUTIONS: Practice Paper for 2nd CSE-1 RPRA

1.Which of the following is not a valid variable name declaration?
a) int __a3;
b) int __3a;
c) int __A3;
d) None of the mentioned

2. C99 standard guarantess uniqueness of _____ characters for external names.
a) 31
b) 6
c) 12
d) 14

3What is the output of this C code?

· #include <stdio.h>

· int main()

· {

· char chr;

· chr = 128;

· printf("%d\n", chr);

· return 0;

· }

a) 128
b) -128
c) Depends on the compiler
d) None of the mentioned

Answer:b
Explanation:signed char will be a negative number.

4. #include <stdio.h>

    int main()

        enum {ORANGE = 5, MANGO, BANANA = 4, PEACH};

        printf("PEACH = %d\n", PEACH);

a) PEACH = 3
b) PEACH = 4
c) PEACH = 5
d) PEACH = 6

5. # define X(a,b,c) a>b&&a>c?a:b>c?b:c; this macro is used to perform _____________________

6. char ch=’97’ the value of ch is ______________

7.    #include <stdio.h>

    int main()

        int i = 3;

        int l = i / -2;

        int k = i % -2;

        printf("%d %d\n", l, k);

        return 0;

-1 , 1

8. Evaluate         int x = 5 * 9 / 3 + 9;

· Evaluate 4*8/2+3*2/2

(19)

10. int n1=10;

Int n2=n1+++++n1+--n1;

What is the value of n2? ________________________

11.   #include <stdio.h>

    void main()

        int x = 1, y = 0, z = 5;

        int a = x && y || z++;

        printf("%d", z);

What it produces out put6

12. ·          int x = 1, y = 0, z = 3;

·          x > y ? printf("%d", z) : return z;

What is the out put ________________

13.    #include <stdio.h>

    int main()

        int i = 0, j = 0;

        if (i && (j = i + 10))

            //do something

14.

int i = 0, j = 0;

if (i && (j = i + 10))

//do something

The value of j is 0

15.

int a = 1, b = 1, d = 1;

printf("%d, %d, %d", ++a + ++a+a++, a++ + ++b, ++d + d++ + a++);

o/p is 15,4,5

16. int a = !0;

     printf("\n.....%d",a);

ans : 1

RVS_SOLUTIONS