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  1. #include<stdio.h>
  2. int main()
  3. {
  4. int n,a,b ;
  5. scanf("%d",&n) ;
  6. b=1;
  7. for(a=1;a<=n;a++)
  8. {
  9. b=a*b;
  10. }
  11. printf("%d",b);
  12. return 0;
  13. }
Success #stdin #stdout 0s 5316KB
stdin
Standard input is empty
stdout
1