I just run this c code, but when i enter A, the program not go to the printf function, i don't know why. I think the value of in is A, and A belong to the case 'A', it should be do.

int main() char in, cis, r; printfA: Circle B : SquareinC: Triangle "); printf("Enter Which Shape to use: "); scanf("%c", &in); switch('in') ( case 'A" printf("Enter P for solve for perimeter and A for solve for Area "); scanf("%c", &cis): cis is choice printf("Enter circle radius: "); scanf("%lf", &r); printf( "Circle perimeterr is:", perimeter( 'A', 2, 0, 0) return 0