Calculate the indegree & outdegree of each vertex

#include <stdio.h>
void main()
{
    int number_of_nodes = 7, i, j;
    int graph[50][50] =
    {
        {0, 1, 1, 0, 0, 0, 1},
        {0, 0, 0, 1, 0, 0, 0},
        {0, 0, 0, 0, 1, 1, 0},
        {0, 0, 1, 0, 0, 0, 0},
        {0, 0, 0, 1, 0, 1, 0},
        {0, 0, 0, 0, 0, 0, 0},
        {0, 1, 0, 0, 0, 0, 0}
    };

    int indegree = 0;
    int outdegree = 0;
    for( i=0; i < number_of_nodes; i++ ){
         for( j = 0; j < number_of_nodes; j++ ){
            if( graph[j][i] == 1 )
                indegree++;
         }
         printf("In Degree: %d ", indegree);
         indegree = 0;

         for( j = 0; j < number_of_nodes; j++ ){
            if( graph[i][j] == 1 )
                outdegree++;
         }
         printf("Out Degree: %d\n", outdegree);

         outdegree = 0;
    }
}