ascii.c

#include <unistd.h>
#include <stdio.h>

int main(void)
{
    char hex_c = '\x63';
    char oct_c = '\143';
    char dec_c = 99;

    fprintf(stdout, "16進数: \n");
    write(1, &hex_c, 1);
    write(1, "\n", 1);
    fprintf(stdout, "8進数: \n");
    write(1, &oct_c, 1);
    write(1, "\n", 1);
    fprintf(stdout, "10進数: \n");
    write(1, &dec_c, 1);
    write(1, "\n", 1);

    return (0);
}