07/05/16 13:10:56
>>162
// 前半は>166を流用
#include <stdio.h>
int main()
{
printf("Input decimal number.:");
int num = 0;
scanf("%d", & num);
if (num > 255 || num < 0) {
fprintf(stderr, "Illegal number.\n");
return 1;
}
static char const * const binaries[] = {
"0000", "0001", "0010", "0011", "0100", "0101", "0110", "0111",
"1000", "1001", "1010", "1011", "1100", "1101", "1110", "1111",
};
printf("binary number:%s%s\n", binaries[num >> 4], binaries[num & 0xf]);
return 0;
}