100 Multiple Choice Questions In C Programming – Part 3
This collection of 100 Multiple Choice Questions and Answers (MCQs) In C Programming : Quizzes & Practice Tests with Answer focuses on “C Programming”.
1. What data type can store 15.9635?
A char
B long
C double
D int
2. What data type can store -15?
A char
B long
C double
D int
3. We want to get a decimal number entered from the keyboard, which statement is correct?
A scanf("%f",decimalNumber);
B scanf("%f",&decimalNumber);
C scanf("%lf", *decimalNumber);
D scanf("%d",decimalNumber);
%d to print integer and %f to print float value.
4. Which expression is valid?
A int my_nbr = 100, 000;
B int my_nbr = 100000;
C int my nbr = 1000;
D int $my_nbr = 10000;
5. What is the output of the following C program?
#include <stdio.h>
int main()
{
printf("Hello World! %d \n", x);
return 0;
}
A Hello World! x;
B Hello World! followed by a random value
C Compilation error
D Hello World!
$gcc prog1.c pgm1.c: In function ‘main’: pgm1.c:4: error: ‘x’ undeclared (first use in this function) pgm1.c:4: error: (Each undeclared identifier is reported only once pgm1.c:4: error: for each function it appears in.)
6. After the operation res = (13/5) -2, what will “res” be equal to?
A 0
B -2
C 0,6
D 2
In mathematics the integer division gives two results:
– The quotient
– The remainder
13/5 gives
– The quotient = 2
– The remainder = 3
13 = 5 * 2 + 3
In C, the / operator gives the quotient and the % operator gives the remainder
13/5 gives the quotient = 2
13%5 gives the remainder = 3
13 = 5 * (13/5) + 13%5
So: res = 2 – 2 = 0
7. What is the output of the following C program?
#include <stdio.h>
int main()
{
int y = 8000;
int y = 4;
printf("Hello World! %d\n", y);
return 0;
}
A Compilation error
B Hello World! 4
C Hello World! 8000
D Hello World! followed by a random value
Since y is already defined, redefinition causes an error. The output is as follows:
$gcc prog2.c pgm2.c: In function ‘main’: pgm2.c:5: error: redefinition of ‘y’ pgm2.c:4: note: previous definition of ‘y’ was here
8. Which of these functions should I use to round 2.5 to 2?
A pow
B ceil
C floor
D sqrt
9. Which of the following is not a valid statement?
A float PI = 3.14;
B double PI = 3.14;
C int PI = 3.14;
D #define PI 3.14
#define PI 3.14 is a preprocessor, to make a textual substitution.
10. What is the output of the following C program?
#include <stdio.h>
int main()
{
int main = 9;
printf("%d", main);
return 0;
}
A This will cause a compile error
B This will cause a runtime error
C It will run without error and displays 9
D It goes into an infinite loop
$gcc prog3.c $ a.out 9
- 100 Multiple Choice Questions In C Programming – Part 1
- 100 Multiple Choice Questions In C Programming – Part 2
- 100 Multiple Choice Questions In C Programming – Part 3
- 100 Multiple Choice Questions In C Programming – Part 4
- 100 Multiple Choice Questions In C Programming – Part 5
- 100 Multiple Choice Questions In C Programming – Part 6
- 100 Multiple Choice Questions In C Programming – Part 7
- 100 Multiple Choice Questions In C Programming – Part 8
- 100 Multiple Choice Questions In C Programming – Part 9
- 100 Multiple Choice Questions In C Programming – Part 10
- 100 Multiple Choice Questions In C Programming – Part 11
- 100 Multiple Choice Questions In C Programming – Part 12
- 100 Multiple Choice Questions In C Programming – Part 13
- 100 Multiple Choice Questions In C Programming – Part 14
