convert whole string to lowercase c++
#include<bits/stdc++.h>
using namespace std;
main() {
string s = "Viet Nam";
transform(s.begin(), s.end(), s.begin(), ::tolower); //lowercase
cout << s << endl;
}convert whole string to lowercase c++
#include<bits/stdc++.h>
using namespace std;
main() {
string s = "Viet Nam";
transform(s.begin(), s.end(), s.begin(), ::tolower); //lowercase
cout << s << endl;
}string c++ if letter is lowercase
for(int i=0;i<str.size();i++){
int c = str[i];
if (islower(c))
str[i] = toupper(c);
}Copyright © 2021 Codeinu
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