scanf not working well in C -

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    if (a % 5)             goto ask;             else             goto main;  ask:printf("do want exit ? y \\ n . . . \n");         scanf("%c", &yn);         getch();         if (yn == 'y')         { y:          system("cls");             yn = 1;             goto sign;         }         else if (yn == 'y')             goto y;         else if (yn == 'n')         { n:          system("cls");             yn = 0;             goto sign;         }         else if (yn == 'n')         {             goto n;         }         else         {             printf("sorry ..didn't catch ... ");                 goto ask;         }

someone me understand problem somereason output code "do u want exit y\n ?" getchar ... "sorry didnt catch u want exit y\n ? "

it looks jumped on scanf() first time , program went directly else ==> "sorry didnt that" , in second time fiugres out how use scanf().

scanf() reads characters %c , yes, enter key press [after previous input] pretty vaild %c [check below spoiler].

enter key press == newline

use 

scanf(" %c", &yn);  //mind space brefore `%c`        ^        |

to ignore previously-stored [also, leading] whitespace [including newline.]

note: eliminates need getch();


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