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#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;
 
int main()
{
    int sum=0;
    string sir;
    vector<int> num;
    vector<char> letters{'a','b','c','d','e','f','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
    getline(cin,sir);
    for(int i = 0; i < letters.size(); i++) {
        char l = letters[i];
       sum = std::count(sir.begin(),sir.end(), l);
 
    num.push_back(sum);
    sum=0;
    }
    for(int i = 0 ; i < letters.size(); i++) {
    cout<<letters[i]<< " ";
    }
    cout<<endl;
    for(int j = 0 ; j < num.size(); j++) {
 
    cout<<num[j]<<" ";
    }
    return 0;
}
 

prog.cpp: In function ‘int main()’:
prog.cpp:12: error: a function-definition is not allowed here before ‘{’ token
prog.cpp:14: error: ‘letters’ was not declared in this scope
prog.cpp:21: error: ‘letters’ was not declared in this scope
prog.cpp:25: warning: comparison between signed and unsigned integer expressions

Standard output is empty