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#include <stdio.h>
int main()
{
int v;
scanf("%d",&v);//è¾å
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while(v)
{
printf("%d",v%10);
v/=10;
}//éåºè¾åºæ¯ä½çå¼ã
return 0;
}
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#include <stdio.h>
#include <string.h>
int main()
{
char s[100];
int i;
scanf("%s",s);//è¾å
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i = strlen(s)-1;//æ¾å°å符串ç»å°¾ä½ç½®ã
while(i>=0)
{
printf("%c", s[i--]);
}//éåºè¾åºæ¯ä½çå¼ã
return 0;
}