题目描述
blablabla
样例
blablabla
C++ 代码
#include <bits/stdc++.h>
using namespace std;
int main()
{
char str[110];
gets(str);
int res = 0;
// cout << str << endl;
for(int i = 0; i < strlen(str); i++){
//cout<< str[i];
/*
int num = int(str[i] - '0');
//cout<< num << endl;
if(num >= 48 && num <= 57){
res ++;
}
*/
if(str[i] == '0' || str[i] == '1' || str[i] == '2' || str[i] == '3' || str[i] == '4' || str[i] == '5' || str[i] == '6' || str[i] == '7' || str[i] == '8'|| str[i] == '9')
res++;
}
cout<< res << endl;
return 0;
}
直接用 大于‘0’ 小于‘9’ 不香吗