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);
}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);
}string c++ if letter is lowercase
if (isupper(str[i])) {
// str[i] is uppercase
}string c++ if letter is lowercase
str[i] = toupper(str[i]);convert characters to lowercase c++
str[i] = tolower(str[i]);check lowercase letters c++
char character = 'a'; //0110 0001
if(character & 0x20) {
//is lowercase
}Copyright © 2021 Codeinu
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