07/05/22 23:05:45
>>737
#include <stdio.h>
int hexchange(char *str)
{
int c;
if(str[0]>='0' && str[0]<='9') {
c=(int)(str[0]-'0');
return c;
}
else if( str[0]>='a' && str[0]<='f' ) {
str[0]-='a'-'A';
}
if( str[0]>='A' && str[0]<='F' ) {
c=(int)(str[0]-'A'+10);
return c;
}
else if( str[0]=='?' ) return -2;
return -1;
}
// 続く