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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int a;
  5. for(a=1;a<21;a++)
  6. {printf("%d " ,a);}
  7. return 0;
  8. }
  9.  
Success #stdin #stdout 0s 5296KB
stdin
Standard input is empty
stdout
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20