用C语言如何编写"键盘输入一个多位数，然后倒序输出" 用C语言程序编写：输入一个四位整数（如1234），使其倒序输...
\u7528C\u8bed\u8a00\u7a0b\u5e8f\u7f16\u5199\u201c\u8f93\u5165\u4e00\u4e2a\u56db\u4f4d\u6574\u6570\uff08\u59821234\uff09\uff0c\u4f7f\u5176\u5012\u5e8f\u8f93\u51fa\uff08\u59824321\uff09\uff0c\u5e76\u6c42\u5176\u5404\u4f4d\u4e4b\u548c\u3002\u201d#includeint main(){int n,s=0; scanf("%d",&n); while(n>0) {printf("%d",n%10); s+=n%10; n/=10; } printf("\n\u5404\u4f4d\u4e4b\u548c=%d\n",s); return 0; }
\u5148\u5199\u51fa\u5176\u5012\u5e8f\uff0c\u7136\u540e\u6c42\u5176\u548c\u3002
\u5177\u4f53\u7a0b\u5e8f\u4ee3\u7801\u5982\u4e0b\uff1a
#include "stdio.h"
int main ()
{
int x,y; //x\u662f\u539f\u6570\u5b57\uff0cy\u662f\u5012\u5e8f\u540e\u7684\u6570\u5b57
printf("\u8bf7\u8f93\u5165\u539f\u6570\u5b57:");
scanf("%d",&x) ;
if(x>9999) printf("\u8f93\u5165\u6570\u5b57\u4e0d\u80fd\u8d85\u8fc79999");
else
{
for(y=0;x!=0;x=x/10 )
y=y*10+x%10;
}
printf("\u5012\u5e8f\u540e\u7684\u6570\u5b57\u662f\uff1a%d",y);
system("pause");
}
可以将输入的多位数顺序存放到一个数组中，之后逆序输出即可。
具体的实现方法可以参考如下程序：
#include<stdio.h>
#include<string.h>
void main()
{
char num[20];
int i;
printf("输入一个多位数：")
scanf("%s", num); // 将多位数作为一个字符串的形式一次性输入，保存在num数组中
// 将数组num中的字符逆序输出，即实现多位数的倒序输出
for(i=strlen(num)-1; i>=0; i--)
printf("%c", num[i]);
}
//不用数组 不考虑负数和0
#include <stdio.h>
int main()
{
int num;
printf("Please input a number\n");
scanf("%d",&num);
printf("the number is %d:\nthe convert is :",num);
while ( num > 0 )
{
printf("%d",num % 10);
num /= 10;
}
printf("\n");
return 0;
}
#include <stdio.h>
#include <string.h>
#define N 100
void main()
{
char tmp = 0;
char array[N];
int i = 0,
j = 0;
printf("input a integer: \b");
gets(array);
for (i, j=strlen(array)-1; i<j; --j,++i)
{
tmp = array[i];
array[i] = array[j];
array[j] = tmp;
}
j = 0;
while (array[j] != '\0')
{
printf("%c",array[j]);
++j;
}
printf("\n");
}
//不用数组就得用栈来了.
#include "stdio.h"
#include "conio.h"
#include "string.h"
main()
{
char cnum[100];
int iflag;
scanf("%s",cnum);
printf("\n");
for(iflag=strlen(cnum)-1;iflag>=0;iflag--)
{
printf("%c",cnum[iflag]);
}
getch();
}
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