c_cpp 从字母数字字符串中删除字符

Posted 2021-05-14

#include<iostream>
#include<string>
using namespace std;

int main()
{
	int t;
	cin >> t;
	while(t--){
	    string s, result = "";
	    cin >> s;
	    int len = s.size();
	    int pos = 0;
	    for(int i=0; i<len; i++){
	        if(s[i] >= '0' && s[i] <= '9')
	            result += s[i];
	    }
	    result += '\0';
	    cout << result <<endl;
	}
	return 0;
}