Programming C

#1. Which of the following loop is guaranteed to execute at least once?

for loop

while loop

do-while loop

#2. What is the correct way to declare a constant in C?

Both are correct

const float PI = 3.14;

#define PI 3.14

#3. What is the output of the following C code? #include int main() { int x = 10; printf("%d", x++); return 0; }

9

11

10

#4. Which of the following is a correct syntax to declare a pointer in C?

int *ptr;

int &ptr;

int ptr;

#5. Which of the following functions is used to dynamically allocate memory in C?

realloc()

malloc()

free()

#6. What will be the output of the following code? #include int main() { int a = 5, b = 2; float result; result = a / b; printf("%.2f", result); return 0; }

2.50

2.00

2

#7. What will happen if you try to compile and run the following code? #include int main() { int a = 5; if(a = 0) printf("Hello"); else printf("World"); return 0; }

Compilation error

Prints "World"

Prints "Hello"

#8. What is the data type of the value returned by the sizeof operator?

float

size_t

int

#9. Which of the following is used to get the remainder of a division in C?

/

//

%

Results

Passed!

Failed!!!