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  1. #include <stdio.h>
  2.  
  3. int multi(int m, int n) {
  4. if(n==0) {
  5. return 0;
  6. } else
  7. return m+multi(m,n-1);
  8. }
  9.  
  10. int main(void) {
  11. int a,b;
  12. scanf("%d",&a);
  13. scanf("%d",&b);
  14. printf("%d", multi(a,b));
  15. return 0;
  16. }
  17.  
Success #stdin #stdout 0s 5312KB
stdin
5 3
stdout
15