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hkshakib

Untitled

Feb 27th, 2020
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  1. #include<stdio.h>
  2. #include<string.h>
  3. int main()
  4. {
  5. int i;
  6. long int len;
  7. char str[1000];
  8. scanf("%s",&str);
  9. len = strlen(str);
  10. for (i=0; i<len; i++)
  11. {
  12. if ((len-i) % 3 == 0 && i > 0)
  13. printf(",");
  14. printf("%c",str[i]);
  15. }
  16. printf("\n");
  17. }
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