Question

How to check if a character is an uppercase character in C

Answer 1

#include <stdio.h>
#include <ctype.h>

int main(void)
{
    unsigned char ch = 'A';

    printf("%d", isupper(ch));
}




/*
run:

1

*/

 

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Answer 2

#include <stdio.h>
#include <ctype.h>

int main(void)
{
    unsigned char ch = 'A';

    if (ch >= 'A' && ch <= 'Z')
        puts("1");
    else
        puts("2");
}




/*
run:

1

*/

 

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