count occurrences of character in string c++
std::string s = "a_b_c";
size_t n = std::count(s.begin(), s.end(), '_'); // n=2count occurrences of character in string c++
std::string s = "a_b_c";
size_t n = std::count(s.begin(), s.end(), '_'); // n=2letter occurrence in string c++
#include<bits/stdc++.h>
using namespace std;
int main(){
int cnt=0;
string s;
cin>>s;
int alpha[26]={0},i=0,j;
while(s[i]!=' '){
if(s[i]>='a'&& s[i]<='z'){
j=s[i]-'a';
alpha[j]++;
}
i++;
}
for(int i=0;i<26;i++){
if(alpha[i]>=1){
cout<<(char)(i+'a')<<" : "<<alpha[i]<<endl;
}
}
return 0;
}Copyright © 2021 Codeinu
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