C Programming - MCQ Practice Questions

Which of the following correctly uses memcpy()?

What is the output of the following C program? #include<stdio.h> int main() { char str[] = "GATE"; printf("%d", sizeof(str)); return 0; }

Consider the following code: int x = 5; int *ptr = &x; int pptr = &ptr; printf("%d", pptr); What is the output?

What will be printed by the following code? #include<stdio.h> int main() { int arr[5] = {1, 2, 3, 4, 5}; int *p = arr; printf("%d %d", *(p+2), arr[2]); return 0; }

What is the output of this code? #include<stdio.h> int main() { int a = 5, b = 10; a = a ^ b; b = a ^ b; a = a ^ b; printf("%d %d", a, b); return 0; }

Consider the following declaration: int (*func_ptr)(int, int, int); Which of the following function signatures can be correctly assigned to func_ptr?