In case of a user enters a lower case how to change it to up

In case of a user enters a lower case, how to change it to upper case immediately. Please help.

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Solution

Add function below to convert ur input word to uppercase.

Niw when user enter the word

cin>>words;

This function coverts to uppercase using the ASCII values,the ASCCI value of a is 097 and A is 065 similarly for all lower to uppercases the ASCII differenec is 32

void upper_string(char s[]) {
int char = 0;

while (s[char] != \'\\0\') {
if (s[char] >= \'a\' && s[char] <= \'z\') {
s[char] = s[char] - 32;
}
char++;
}
}