Problem:
Score : 100 points

Problem Statement

Given is a three-digit integer N. Does N contain the digit 7?

If so, print Yes; otherwise, print No.

Constraints

100 \leq N \leq 999

Input

Input is given from Standard Input in the following format:

N

Output

If N contains the digit 7, print Yes; otherwise, print No.

Sample Input 1

117

Sample Output 1

Yes

117 contains 7 as its last digit.

Sample Input 2

123

Sample Output 2

No

123 does not contain the digit 7.

Sample Input 3

777

Sample Output 3

Yes

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<stdio.h>
int main()
{
    int a, b;
    scanf("%d", &a);

    if(100<=a && a<=999)
    {
        b=a%10;
        if(b==7)
        {
            printf("Yes\n%d contains 7 as its last digit.\n", a);
        }

        else
        printf("No\n%d does not contain the digit 7.\n", a);
    }

    return 0;
}