/C++/String c++ if letter is lowercase

String c++ if letter is lowercase

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);
}

4

String c++ if letter or number

char test='a';
cout<<isalpha(test);

1

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