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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int car, miles, gas;
  5. int sumMiles = 0;
  6. int sumGas = 0;
  7. int avgMPG = 0;
  8. FILE *inFile, *outFile;
  9. char fname[20];
  10.  
  11. printf("\nCar No. Miles Driven Gallons Used\n");
  12.  
  13. while (scanf("%d %d %d",&car, &miles, &gas) != EOF)
  14. {
  15. printf("%-7d %-15d %d\n",car,miles,gas);
  16. sumMiles += miles;
  17. sumGas += gas;
  18. avgMPG = sumMiles / sumGas;
  19. }
  20.  
  21. printf("\nThe total miles driven is %d\n", sumMiles);
  22. printf("The total gallons of gas used is %d\n", sumGas);
  23. printf("The average miles per gallon of gas used is %d\n", avgMPG);
  24.  
  25. printf("File copied succesfully!");
  26. return 0;
  27. }
  28.  
Success #stdin #stdout 0s 2252KB
stdin
123 100 5
345 150 6
678 240 10
901 350 15
stdout
Car No.   Miles Driven    Gallons Used
123     100             5
345     150             6
678     240             10
901     350             15

The total miles driven is 840
The total gallons of gas used is 36
The average miles per gallon of gas used is 23
File copied succesfully!