Beyond the classroom

#include <stdio.h>

int main() {

int x = 10;

int ptr = &x;

printf("%d", ptr);

return 0;

}

• 10

• Garbage Value

• Error

• Depends on the compiler

#include <stdio.h>

int main() {

int x = 5;

if (x = 5) printf("Hello");

else printf("World");

return 0;

}

• Hello

• World

• Compile-time error

• Runtime error

struct Example {

char c;

int i;

double d;

};

• 9 bytes

• 10 bytes

• 12 bytes

• 13 bytes

#include <stdio.h>

int main() {

printf("%d", sizeof(float));

return 0;

}

• 2

• 4

• 8

• Depends on the system

Explain the significance of #include <stdlib.h> in a C program.

• It includes standard input/output functions

• It includes functions for dynamic memory allocation

• It includes functions for string manipulation

• It includes functions for mathematical operations

What is the purpose of the void keyword in C?

• To specify that a function takes no arguments

• To specify that a function returns no value

• To declare a pointer

• To indicate an empty statement

Which of the following is not a valid C keyword?

• switch

• default

• case

• function

#include <stdio.h>

int main(){

int x = 10;

while (x > 0) {

printf("%d ", x);

x -= 2;

}

return 0;

}

• 10 8 6 4 2

• 10 9 8 7 6 5 4 3 2 1

• 10 8 6 4 2 0

• 10 9 8 7 6 5 4 3 2

#include <stdio.h>

int main() {

int x = 10;

while (x > 0) {

printf("%d ", x);

x++;

}

return 0;

}

• Infinite loop

• 10 9 8 7 6 5 4 3 2 1

• 10

• 10 11 12 13 14 ... (continues)

#include <stdio.h>

void func(int n) {

if (n > 0) {

printf("%d ", n);

func(n - 1);

}

}

int main() {

func(3);

return 0;

}

• 3 2 1

• 1 23

• 1 1 1

• 3 3 3