Question

Question 4 5 Write a function to upper that converts a string from lower case to change it to "HELLO": Remember that you can test if a char is between 'a and z. inclusive, and that capital chars int main0i upper case. For the following function, to upper should accept hello as an are 32 less than lower case chars char sil "hello" printf("s-%s\n", s); to uppers): printf("s-%sin", s); return O: The program output should be: s hello s HELLO HTML Editor Paragraph

Answer 1

#include <stdio.h>

void to_upper(char s[]) {
    int i = 0;
    while(s[i]) {
        if(s[i] >= 'a' && s[i] <= 'z') {
            s[i] -= 32;
        }
        i++;
    }
}

int main()
{
    char s[] = "hello";
    printf("s = %s\n", s);
    to_upper(s);
    printf("s = %s\n", s);
    return 0;
}

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