asc码转换

main()
{
int a;
char b;
int c;
while(1)
{
printf("\1\1\1\1 37:LEFT ~~ 38:UP~~39:RIGHT~~40:DOWN         \1\1\1\1\1\1       \n");
printf("1:char to int~~~2:int to char\n");
scanf("%d",&c);
switch(c)
{
case 1:printf("enter char:");b=getch();printf("%c-->%d\n",b,b);break;
case 2:
printf("enter int:");
scanf("%d",&a);
printf("%d-->%c\n",a,a);
break;
}
}
}