WAP to Find path in a tree represented with NXN array

I have an MST(anyway a tree..) represented with a NXN array.
I want to find the path between 2 nodes source, destination (or sensor, sink in WSN).


/*
given a MST graph[N][N]
we find the path from a node to the root
*/
#include
#define N 4

int main(){
int graph[N][N]={{0,1,1,0},
{1,0,0,1},
{1,0,0,0},
{0,1,0,0},
};
int leaves[N];
int i,j;
int count;
//initialize
for( i=0; i //find which nodes are leaves
for(i=0; i count=0;
for( j=0; j if (graph[i][j]==1) count++;
if (count>1) {leaves[i]=0;break;}
}
}
for( i=0;i printf("%d ",leaves[i]);
printf("\n");

int path[N];
for( i=0;i path[i]=-1;
int path_index=0;
int a=3,sink=0;//two nodes
int cur=a;
path[path_index]=a;
path_index++;
int parent=-1;
while(parent!=sink){//while destination not found
printf("parent=%d",parent);getchar();printf("\ncur: %d",cur);getchar();
for(j=0;j {
if (graph[cur][j]==1 && leaves[cur]==1){
parent=j;path[path_index]=parent;path_index++;
if (parent==sink) break;
printf("\ncur: %d",cur);getchar();
printf("parent: %d ",parent);
}
if (graph[cur][j]==1&& !(leaves[j])){
parent=j;path[path_index]=parent;path_index++;
if (parent==sink) break;
printf("\ncur: %d",cur);getchar();
printf("parent: %d ",parent);
}

}
cur=parent;

}
for(i=0;i if (path[i]!=sink) printf("%d--> ",path[i]);
else break;
}

getchar();
return 0;
}