C Programming Mock Test 6

10%

Question 1 of 10

1. What are the Properties of the first argument of a printf() functions?

There may no be first argument

It is defined by a user

None of the mentioned

It keeps the record of the types of arguments that will follow

Question 1 of 10

Question 2 of 10

2. The syntax to print a % using printf statement can be done by ________

'%'

Question 2 of 10

Question 3 of 10

3. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        FILE *fp;
        char c;
        int n = 0;
        fp = fopen("newfile1.txt", "r");
        while (!feof(fp))
        {
            c = getc(fp);
            putc(c, stdout);
        }
    }

Prints to the screen some contents of newfile1.txt

Compilation error

Prints to the screen content of newfile1.txt completely

None of the mentioned

Question 3 of 10

Question 4 of 10

4. Escape sequences are prefixed with ________

None of the mentioned

Question 4 of 10

Question 5 of 10

5. What is the difference between %e and %g?

No differences

%e output formatting depends on the argument and %g always formats in the format [-]m.dddddd or [-]m.dddddE[+|-]xx where no.of ds are optional

Depends on the standard

%e always formats in the format [-]m.dddddd or [-]m.dddddE[+|-]xx where no.of ds are optional and output formatting depends on the argument

Question 5 of 10

Question 6 of 10

6. What will be the output of the following C code?

    #include <stdio.h>
    union
    {
        int x;
        char y;
    }p;
    int main()
    {
        p.y = 60;
        printf("%d\n", sizeof(p));
    }

sizeof(int) + sizeof(char)

Depends on the compiler

Compile time error

sizeof(char)

Question 6 of 10

Question 7 of 10

7. Members of a union are accessed as________________

none of the mentioned

both union-name.member & union-pointer->member

union-pointer->member

union-name.member

Question 7 of 10

Question 8 of 10

8. What type of data is holded by variable u int in the following C code?

    #include <stdio.h>
    union u_tag
    {
        int ival;
        float fval;
        char *sval;
    } u;

Will be large enough to hold the all of the three types;

Will be large enough to hold the largest of the three types;

Will be large enough to hold the smallest of the three types;

None of the mentioned

Question 8 of 10

Question 9 of 10

9. Which type of files can’t be opened using fopen()?

.txt

.bin

none of the mentioned

Question 9 of 10

Question 10 of 10

10. What will be the output of the following C code (when 4 and 5 are entered)?

    #include <stdio.h>
    void main()
    {
        int m, n;
        printf("enter a number");
        scanf("%d", &n);
        scanf("%d", &m);
        printf("%d\t%d\n", n, m);
    }

Junkvalue 5

4 5

4 junkvalue

Error

Question 10 of 10