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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int sum,i;
  5. sum = 0;
  6. for(i = 1;i < 10;i ++){
  7. sum = sum+i;
  8. }
  9. printf("sum=%d\n",sum);
  10. return 0;
  11. }
  12.  
Success #stdin #stdout 0s 5320KB
stdin
Standard input is empty
stdout
sum=45