Correct the wrong question: enter the scores of three students (plastic surgery) and find the total score and average score of these three students.
aver = sum/3； Changed to aver = (flaot) sum/3; Only in this way can we get floating-point results.
fprintf(wf，" %d\n%f\n "，x)； To fprintf(wf，" %d\n%f\n "，sum，aver)；