Aptitude Test C Programming For Data Types

Welcome to Your Quiz: Aptitude Test C Programming For Data Types

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1. Comment on the output of this C code?
    int main()
    {
        float f1 = 0.1;
        if (f1 == 0.1f)
            printf("equal\n");
        else
            printf("not equal\n");
    }

Output depends on compiler

equal

None of the mentioned

not equal

2. What is the output of this C code?
    int main()
    {
        float a = 5.477777777777;
        printf("%f", a);
    }

5.48

5.477777

5.477

5.477778

3. What is the output of this C code (on a 32-bit machine)?
    int main()
    {
        int x = 10000;
        double y = 56;
        int *p = &x;
        double *q = &y;
        printf("p and q are %d and %d", sizeof(p), sizeof(q));
        return 0;
    }

p and q are 4 and 8

p and q are 2 and 8

p and q are 4 and 4

Compiler error

4. %f access specifier is used for?

float type

None of the above

Integer type

character type

5. Which of the datatypes have size that is variable?

struct

float

double

int

6. Which of the following % operation is invalid?

Both (b) and (c)

4 % 8l;

4 % 8;

4 % 8f;

7. What is short int in C programming?

All of the mentioned

short is the qualifier and int is the basic datatype

Basic datatype of C

Qualifier

8. What is the output of this C code?
    int main()
    {
       char chr;
       chr = 128;
       printf("%d\n", chr);
       return 0;
    }

None of the mentioned

128

-128

9. Loss in precision occurs for typecasting from____________.

float to int

long to float

char to short

float to double

10. What is the output of this C code?
    int main()
    {
        float x = 'a';
        printf("%f", x);
        return 0;
    }

run time error

97.000000

a.000000

11. What is the size of an int data type?

8 Bytes

2 Bytes

4 Bytes

Depends on the system/compiler

12. Comment on the output of this C code?
    int main()
    {
        int a[5] = {1, 2, 3, 4, 5};
        int i;
        for (i = 0; i < 5; i++)
            if ((char)a[i] == '5')
                printf("%d\n", a[i]);
            else
                printf("FAIL\n");
    }

Program will compile and print the output 5

The compiler will flag an error

Program will compile and print FAIL for 5 times

Program will compile and print the ASCII value of 5

13. Comment on the output of this C code?
    int main()
    {
        float f1 = 0.1;
        if (f1 == 0.1)
            printf("equal\n");
        else
            printf("not equal\n");
    }

Output depends on compiler

not equal

equal

None of the mentioned

14. The number of digits present after decimal in float is________.

15. What is the size of float in a 32-bit compiler?

16. The format identifier ‘%i’ is also used for _____ data type?

char

float

int

double

17. Select the odd one out with respect to type?

char

float

int

double

18. Which of the following is a User-defined data type?

typedef int Boolean;

All of the mentioned

struct {char name[10], int age};

typedef enum {Mon, Tue, Wed, Thu, Fri} Workdays;

19. Which data type is most suitable for storing a number 65000 in a 32-bit system?

long

double

int

short

20. Which is correct with respect to size of the datatypes?

int > char > float

double > char > int

char > int > float

char < int < double

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Aptitude Test C Programming For Data Types

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