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  1.  
  2. class SumNatural
  3. {
  4. public static void main (String[] args) {
  5. int num=100,sum=0;
  6. for(int i=1;i<=num;++i)
  7. {
  8. //sum=sum+i;
  9. sum+=i;
  10. }
  11. System.out.println("Sum="+sum);
  12.  
  13. }
  14. }
Success #stdin #stdout 0.09s 33964KB
stdin
Standard input is empty
stdout
Sum=5050