Description

請撰寫一個程式，讓使用者輸入一個檔案名稱，並且確認該檔案檔名是否為 c。

Please write a program that allows the user to enter a file name and confirm whether the file name is c.

Input

輸入包含一個字串�s，�s的長度≤15≤15，字串的結尾一定是某個檔名。

The input contains a string �s, the length of �s is ≤10≤10, and the end of the string must be a certain file name.

Output

若檔名為 c 請輸出 yes

若檔名不為 c 請輸出 no

If the file name is c, please output yes

If the file name is not c, please enter no

Sample Input 1

main.c

Sample Output 1

yes

Sample Input 2

main.cpp

Sample Output 2

no

#include <stdio.h>
int main()
{
    char n[10];
    int counter = 0;
    scanf("%s", &n);
    for(int i = 0; i<=10;i++){
    	if((int)n[i]=='.'){
    		counter++;
    		if((int)n[i+1]=='c'){
    			counter++;
    			if((int)n[i+2]<=0){
    				counter++;
				}
			}
		}
	}
	if(counter>=3){
		printf("yes");
	}else{
		printf("no");
	}
    
    return 0;
}