int？ Master ()
{
Invalid? average_stu(int？ Array [3][5]? );
Invalid? average_lesson(int？ Array [3] [5]);
int？ a[3][5]，I，j；
For what? (I = 0； I<3; i++)
{
printf("num:%d\t "，I+ 1)；
Printf ("input? Results:? ”);
for(j = 0； j & lt5; j++)
{
scanf("%d "，& ampa[I][j])；
}
}
average _ stu(a)；
printf(" \ n ")；
Average _ class (1);
Return? 0;
}
Invalid? average_stu(int？ Array[3][5])// Average score of each student
{
int？ I，j；
Floating? Sum;
for(I = 0； I<3; i++)
{
sum = 0；
For what? (j = 0； j & lt5; j++)
{
sum+= array[I][j]；
}
Printf ("The average score of students with %d is %4.2f\n", i, sum/5);
}
}
Invalid? average_lesson(int？ Array[3][5])// Average score of each course
{
int？ I，j；
Floating? Sum;
for(j = 0； j & lt5; j++)
{ sum = 0；
for(I = 0； I<3; i++)
{
sum+= array[I][j]；
}
Printf ("the average grade of the course with course number %d is %4.2f\n", j, sum/3);
}
}
Operation effect diagram