C Programming Quiz

#include<stdio.h> int main() { static int i; for(i = 1;;++i) { if(i == 5) break; printf("%d ",i++); } }

• 1 3

• 1 2 3 4

• 1 2 3

• 1 2 3 4 5

#include<stdio.h> int main() { char a = 10,b = 20; printf("%d\n",scanf("%d %*d",&a,&b)); // Assume input to be : 123 456 printf("a = %d\n",a); printf("b = %d",b); }

• 1 a = 10 b = 456

• 1 a = 123 b = 20

• 2 a = 123 b = 456

• 2 a = 123 b = 20

#include<stdio.h> int foo() { static int i; return ++i*2; } int main() { printf("%d",foo()*foo()*foo()); }

• 48

• 16

• 64

• 24

#include <stdio.h> int main() { int arr[] = {10, 20, 30, 40}; int *ptr = arr; printf("%d ",*ptr++); printf("%d",*++ptr); }

• 10 30

• 10 20

• 20 30

• 20 40

#include<stdio.h> int fun(int n) { if(n <= 1) return 1; return n + fun(n--); } int main() { printf("%d",fun(5)); }

• 15

• 16

• Infinite loop / Stack overflow

• Compilation error

#include<stdio.h> struct A { char a; int b; char c; }; struct B { float a; int b; int c; }; int main() { if(sizeof(struct A) == sizeof(struct B)) printf("Equal"); else printf("Not Equal"); }

• Equal

• Not Equal

• Compilation Error

• Runtime Error

#include<stdio.h> int main() { int x = 8; printf("%d",(x & 1) ? x >> 1 : x << 1); }

• 0

• 4

• 16

• Compilation Error

#include<stdio.h> int* getRef(int* x) { return x; } int main() { int a = 5; *getRef(&a) = 10; printf("%d", a); return 0; }

• 5

• 10

• 0

• Compilation Error

#include<stdio.h> int main() { int arr[] = {1, 2, 3}; for (int y : arr) { y += 10; } printf("%d",arr[0]); }

• 1

• 11

• 0

• Error

#include <stdio.h> int main() { printf("%d",-1[(int[]){1,2,3,4,5}]); }

• -2

• 2

• Garbage Value

• Undefined Behaviour