Sorting of array element using a function

Program 43) Write a program that uses a function to sort an array of integers.
A program to sort an array of integers using the function sort( ). Its output clearly shows that a function can change the values in an array passed as an argument.

                                
                                    PROGRAM

void sort (int m, int x[ ]) ;
main ( )
 {
      int i ;
      int marks [5] = {40, 90, 73, 81, 35} ;

      printf ("Marks before sorting\n") ;
      for (i = 0; i < 5; i++)
           printf ("%d", marks [i]) ;
      printf ("\n\n") ;


      sort (5, marks) ;
      
     printf ("Marks after sorting \n") ;
     for (i = 0; i < 5; i++)
          printf ("%4d", marks [i]) ;
     printf ("\n") ;
 }
 void sort (intm, int x[ ])
 {
       int i, j, t ;

       for (i = 1; i<= m - 1; i++)
           for (j = 1; j<= m - i; j++)
                 if (x [j - 1] >= x [j])
                 {
                      t = x [j - 1] ;
                      x [j - 1] = x [j] ;
                      x [j] = t ;
                  }
 }


Output:           Marks before sorting
                        40  90  73  81  35


                        Marks after sorting
                        35  40  73  81  90