110a lucky number codeforces in hindi

Question link: Codeforces 110A Nearly Lucky Number solution in CPP #include<bits/stdc++.h> using namespace std; int main() { string a; int c=0,z=0; cin>>a; for(int i=0;i<a.size();i++) { if(a[i]==’4’||a[i]==’7′)//Codeforces 110A Nearly Lucky Number solution in CPP c++; } if(c==4||c==7) cout<<“YES”<<endl; else cout<<“NO”<<endl; } Codeforces 734A.Anton and Danik solution in Cpp