Run ID 作者 问题 语言 测评结果 Time Memory 代码长度 提交时间
123045 罗子童 只出现一次的字符 C++ Compile Error 0 MS 0 KB 598 2025-06-22 18:16:34

Tests(0/0):

Code:

#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ string a; int b[200]={0}; getline(cin,a); for(int i=0;i<=a.size();i++){ b[a[i]]++; } for(int i=0;i<=a.size();i++){ if(b[a[i]]=1){ cout<<char'a'; return 0; } } cout<<"no"; return 0; }

Run Info:

Main.cc: In function 'int main()':
Main.cc:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<=a.size();i++){
                  ^
Main.cc:14:15: warning: array subscript has type 'char' [-Wchar-subscripts]
         b[a[i]]++;
               ^
Main.cc:18:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<=a.size();i++){
                  ^
Main.cc:19:18: warning: array subscript has type 'char' [-Wchar-subscripts]
         if(b[a[i]]=1){
                  ^
Main.cc:19:21: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
         if(b[a[i]]=1){
                     ^
Main.cc:20:19: error: expected primary-expression before 'char'
             cout<