Created: 2022-08-15
Tags: #fleeting
// Make letters be UPPERCASE. Please put letters only
const char* str_toUpper(char str_ltr[], int len)
{
for (int i = 0; i < len; i++) {
// Skips if already in uppercase
if (str_ltr[i] >= 'A' && str_ltr[i] <= 'Z')
continue;
// Convert lower to UPPER
str_ltr[i] -= 32;
}
return str_ltr;
}