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// 12函数功能：按学号查找学生成绩并显示查找结果
void SearchbyNum(STU stu[], int n, int m)
{
long number;
int i, j;
printf("Input the number you want to search:");
scanf("%ld", &number);
for(i=0;i<n;i++)
if (stu[i].num==number)
printf("%ld\t%s\t", stu[i].num, stu[i].name);
for (j=0; j<m; j++)
printf("%.0f\t", stu[i].score[j]);
}
printf("%.0f\t%.0f\n", stu[i].sum, stu[i].aver);
return;
printf("\nNot found!\n");
