以下程式碼供大家參考
方法1
#include <stdio.h>
#include <stdlib.h>
int reversing(long int);
int reversing(long int number)
{
while(number > 0)
{
printf("%d",number%10);
number=number/10;
}
return 0;
}
void main (void)
{
long int number;
printf("please enter number > ");
scanf("%d",&number);
printf("The reversing of %d is ",number);
reversing(number);
printf("\n");
system("pause");
}方法2#include <stdio.h>
#include <stdlib.h>
int reversing(long int);
int reversing(long int number)
{
long int result=0,temp,ten_pow=1;
int k=0;
temp=number; //計算次數前先把數字存起來
//--------計算最大是十的幾次方--------
while(number > 0)
{
number=number/10;
k++;
}
//--------計算剛剛的十的N次方是多少
number=temp;
for(int i=1;i<k;i++)
ten_pow=ten_pow*10;
//-------逐一取餘數，並乘上十的N次方或N-1次方等等
while(number > 0)
{
result=result+((number%10)*ten_pow);
number=number/10;
ten_pow=ten_pow/10;
}
//傳回結果
return result;
}
void main (void)
{
long int number;
printf("please enter number > ");
scanf("%ld",&number);
printf("The reversing of %ld is %d",number,reversing(number));
printf("\n");
system("pause");
}
