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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int a=0,b;
  5.  
  6. scanf("%d",&b);
  7. while( a<= b )
  8. {
  9. printf("%d",a);
  10. a=a+1;
  11. }
  12. return 0;
  13. }
Success #stdin #stdout 0s 5308KB
stdin
5
stdout
012345