C program to check the occurrence of a number in an array

#include <stdio.h>

int main()
{

//Input the size and elements of the array
int n,visited = -1;
printf("Enter the size of the array: ");
scanf("%d", &n);
int a[ n ],b[ n ];
printf("Enter the elements one by one\n");
for(int i=0; i<n; i++)
scanf("%d", &a[ i ]);

//Checking the occurrence
 for ( int j = 0; j < n; j++ ) {
       int count = 1;
       for ( int k = j+1; k < n; k++) {
             if ( a[ j ] == a[ k ] ) {
                count++;
                b[k] = visited;
                }
             }
      if(b[ j ] != visited) {
            b[ j ] = count;
       } }

// Printing the elements and the number of time each appeared
for ( int j = 0; j < n; j++ ) {
      if ( b[ j ] != visited ) {
         printf("The element %d appears %d times\n", a[ j ], b[ j ]);
         }
}
return 0;
}