How many times the program will print "Hello World" ? #include<stdio.h> int main() { printf("Hello World"); main(); return 0; }

The first argument in command line arguments is?

If the two strings are identical, the strcmp() function returns?

How many times i value is checked in the below code? #include int main() { int i = 0; do { i++; printf('in while loop\n'); } while (i < 3); }

Output of following code:- #include #include void display(int num,...); int main() { display(4,'A','B','C','D'); return 0; } void display(int num, ...) { char c,c1; int j; va_list ptr,ptr1; va_start(ptr,num); va_start(ptr1,num); for(j=1;j<=num;j++) { c=va_arg(ptr, int); printf('%c,',c); c1=va_arg(ptr1, int); printf('%d\n',c1); } }

Output of the following code? int main() { FILE *foobar = stdout; int foo; fprintf(foobar, '%d ', 20); fflush(stdout); fprintf(stderr, '%d', 99); return 0; }

Output of the following code snippet? #include main() { int x = 5; if(x=5) { if(x=5) break; printf('Hello'); } printf('Hi'); }

Which function is used to de-allocate the memory allocated using malloc()?

Output of following code? int main() { int a=5; if(a=10) printf('Value of a=%d',a); else printf('Value of a=%d',a); return 0; }

Which is an invalid operator?

Output of following program? #include int main() { int y=128; const int x=y; printf('%d\n',x); return 0; }