185 : 문자열1 - 형성평가4

#include <stdio.h>
#include <string.h>
 
#pragma warning (disable:4996)
 
int main()
{
    char string[100];
    char letter;
    int size;
 
    scanf("%s", string);
    scanf(" %c", &letter);
 
    size = strlen(string);
 
    for (int i = 0; i < size; i++)
    {
        if (letter == string[i]) {
            printf("%d", i);
            return 0;
        }
    }
 
    printf("No");
    return 0;
}