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  1. //Q85. Reverse a string.
  2. #include <stdio.h>
  3. int main() {
  4. char str[100];
  5. int i, len = 0;
  6. gets(str);
  7. for(i=0; str[i]!='\0'; i++)
  8. len++;
  9. for(i=len-1; i>=0; i--)
  10. printf("%c", str[i]);
  11. }
  12.  
Success #stdin #stdout 0.01s 5276KB
stdin
abcd
stdout
dcba