Question

How to convert an ASCII character into a hex value in C

Answer 1

#include <stdio.h>

int main() {
    char ascii_char = 'A'; 
    char hex_value[3]; 

    // Convert ASCII character to hex value
    sprintf(hex_value, "%02X", ascii_char);

    printf("The hexadecimal value of '%c' is: 0x%s\n", ascii_char, hex_value);

    return 0;
}



/*
run:

The hexadecimal value of 'A' is: 0x41

*/

 

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Answer 2

#include <stdio.h>

int main() {
    char ascii_char = 'A'; 

    printf("The hexadecimal value of '%c' is: 0x%X\n", ascii_char, (int)ascii_char);

    return 0;
}



/*
run:

The hexadecimal value of 'A' is: 0x41

*/

 

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