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- #include<stdio.h>
- void rev(char *start,char *end)
- {
- if(start>=end)
- return;
- char ch=start[0];
- start[0]=end[0];
- end[0]=ch;
- rev(start+1,end-1);
- }
- int main()
- {
- char ar[100];
- scanf("%s",&ar);
- rev(ar,ar+strlen(ar)-1);
- printf("%s",ar);
- }
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