Thread: strtok again

ok I am trying to read in from a file using fgets
the first part of the file looks like this


diagram,Human Circulatory System
:
: blah blah blah
: blah blah blah
:
vertex,1,brain

I don't need to save the part that says blah blah blah

I have put something in my code to skip over the lines that start with a colon but whenever I try to start reading again, there is a problem where I have indicated
I assume it is because strtok can't use NULL as a starting point because those lines were skipped over.

I am trying to read in the first line after the comments up to the comma. Once I have read that in I will proceed conditionally, based on what the string is.
So after I have read in the graph type and title, the next thing to read will be vertex, and then proceed based on the vertex conditions

Code:

while (fgets(line,100,readfile) != NULL) 
	{
		
		strcpy(Graph->type, strtok(line,","));
		strcpy(Graph->title, strtok(NULL,"\n"));
		if(line[0] != ':')//if line isn't a comment
		{
						strcpy(info, strtok(NULL,","));//problem is here
			
			if(strcmp(info, vertex) == 0)
			{
	
				strcpy(temp, strtok(NULL,","));
				vertex_ptr->inumber = atoi(temp);
				strcpy(vertex_ptr->city, strtok(NULL,"\n"));
			}
			if(strcmp(info, edge) == 0)
			{

				strcpy(temp, strtok(NULL,","));
				edge_ptr->iedge_number = atoi(temp);
				strcpy(temp, strtok(NULL,","));
				edge_ptr->ideparture = atoi(temp);
				strcpy(temp, strtok(NULL,","));
				edge_ptr->idestination = atoi(temp);
				strcpy(temp, strtok(NULL," "));
				edge_ptr->edge_weight = atof(temp);
			}

		}

			
			
	}

can anyone see how I can fix this?