# include<stdio.h>
int main()
{
int x;
scanf("%d",&x);
int digit;
while(x>0){
digit = x%10;
printf("%d",digit);
x/=10;
}
return 0;
}
升級版:
# include<stdio.h>
int main()
{
int x;
scanf("%d",&x);
int digit;
int ret = 0;
while(x>0){
digit = x%10;
ret =ret*10+digit;
printf("x=%d,digit=%d,ret=%d\n",x,digit,ret);
x/=10;
}
printf("ret=%d\n",ret);
return 0;
}
空格輸出:
# include<stdio.h>
int main()
{
int x;
scanf("%d",&x);
do {
int d = x % 10;
printf("%d",d);
if(x > 9){
printf(" ");
}
x /= 10;
} while (x>0);
printf("\n");
return 0;
}