How can i convert lowercase letters into uppercase letters using array?

Answer 1

char myLetters []={'a','b'...'z'};
char caps=myLetters[(place in alphabet-1)]-32;
cout << caps;

Answer 2

#include <iostream>
using namespace std;

int main() {
char a[10];
int i;

for(i=0;i<10;i++)
cin>>a[i];
for(i=0;i<10;i++)
a[i]-=32;

for(i=0;i<10;i++)
cout<<a[i];
return 0;
}

Answer 3

you can also use the "to upper" statement