BASIC C QUIZ

____________ is a datatype format specifier used to print and scan an integer value.

• %f

• %d

• %c

• %s

Which of the following is not a valid C variable name?

• a) int number;

• b) float rate;

• c) int variable_count;

• d) int $main;

All keywords in C are in ____________

• a) LowerCase letters

• b) UpperCase letters

• c) CamelCase lettersned

• d) None of the mentioned

Which is valid C expression?

• a) int my_num = 100,000;

• b) int my_num = 100000;

• c) int my num = 1000;

• d) int $my_num = 10000;

What will be the final value of x in the following C code?

#include <stdio.h>

void main()

{

int x = 5 * 9 / 3 + 9;

}

• a) 3.75

• b) Depends on compiler

• c) 24

• d) 3

Which of the following declaration is not supported by C?

• A.String str;

• B. char *str;

• C. float str = 3e2;

• D. int s[20];

How many characters can a string hold when declared as follows?

char name[20]:  

• 18

• 19

• 20

• None of the these

 What is the output of this program?

#include <stdio.h>

int main()

{

printf("variable! %d", x);

return 0;

}

• A. variable! x

• B. variable! followed by a junk value

• C. Compile time error

• D. variable!

Which of the following is an invalid method for input?

• a.scanf(“%d%d%d”,&a, &b, &c);

• b.scanf(“%d %d %d”, &a, &b, &c);

• c.scanf(“Three values are %d %d %d”,&a,&b,&c);

• d.none of the mentioned

scanf returns as its value

• a.Number of successfully matched and assigned input items

• b.Nothing

• c.Number of characters properly printed

• d.Error