I am not sure what is wrong with my code!

when I run the code, the output should be the answer to the operation I chose, and then the operations menu should show again asking me to choose an operation and it stops.

But in my case, the operation menu shows again, then it shows "Invalid option! Choose the correct operation", is there anything I missed?

#include

int main() { int first,second; char option;

do { printf (" Choose the operation: "); printf ("+ Addition - Substraction * Multiplication / Division ! Factorial 0 Exit "); scanf ("%c", &option); if (option=='0') { break; }

switch (option) { case '+': printf ("Enter the first Integer: "); scanf ("%d", &first); printf ("Enter the second Integer: "); scanf ("%d", &second); printf ("Answer is: %d ", first+second); break;

case '-': printf ("Enter the first Integer: "); scanf ("%d", &first); printf ("Enter the second Integer: "); scanf ("%d", &second); printf ("Answer is: %d ", first-second); break;

case '*': printf ("Enter the first Integer: "); scanf ("%d", &first); printf ("Enter the second Integer: "); scanf ("%d", &second); printf ("Answer is: %d ", first*second); break;

case '/': printf ("Enter the first Integer: "); scanf ("%d", &first); printf ("Enter the second Integer: "); scanf ("%d", &second); if (second==0) { printf("Error! "); } else { printf ("Answer is: %d ", first/second); } break;

case '!': printf ("Enter the first Integer: "); scanf ("%d",&first); printf ("The Factorial of %d is: %d ", first, first*second); break; case '0': break;

default: printf ("Invalid option! Choose the correct operation "); break; } }

while (option!='0'); }