I'm trying to write a program with choice menu using the switch statement in C. Here's my code:
main (){ char option; int test; start: printf ("Enter: "); scanf ("%c", &option); while (getchar() != '\n'); switch (option) { case '1': printf ("Test 1 : "); scanf ("%d", &test); break; case '2': printf ("Test 2 : "); break; } if (option != 'q') goto start;}The program is intended to repeat until 'q' character is inputted from the keyboard. The problem is whenever I try to input '1' from the keyboard for the first time (which executed the case 1), the next time I input '1' or '2' the program will skip case 1 (or 2) and go directly to the next loop, however after the next loop it executed the case 1 (or 2) normally. Besides, the case 2 (which don't have the scanf () function) everthing work correctly. I have also tried to remove the scanf from the case 1 and after that case 1 executed normally. Here're some of the output:
Enter: 1Test 1 : 5Enter: 1Enter: 1Test 1 : 7Enter: 2Enter: 2Test 2 :Enter: 2Test 2 :Can anyone explain to me what's wrong with my code and tell me how to fix it?