Thread: Reading text file into a structure

Hi,

I'm trying to read a text file that is formatted as....

NetlistFile:

Code:

2 3
OR 1 2 3
AND 4 6 4
AND 6 4 3

Where the two number on the first line need to be read into two ints called nGates and nNodes respectively.
And then each following line needs to be read into a new structure in the form below:

Code:

// Setup Gate Structure
    typedef struct
        {
         char GateType[4];
         int OutputNode;
         int InputNode1;
         int InputNode2;
        } LogicGate;

It prints to the command window fine and I get a list exactly matching the text file. But when I try to recall information later - for example LogicGates[0].GateType - The program only ever gives the very final gate type, in this example 'AND' and for any other index number ie LogicGates[1].GateType - gives nothing.

Can you tell me what I'm doing wrong??

Thanks,

Code:

                
// Read in NetlistFile  
    FILE *fp= fopen(NetlistFile,"r");  
    LogicGate *LogicGates = malloc(200 * sizeof *LogicGates);
    int index = 0;
    
    // Get nGates and nNodes
    while(fscanf(fp, "%d %d", &nGates, &nNodes) == 2)
    // Print to screen
    printf("\n  %d %d", nGates, nNodes);
    
    // Get Gate data and structure    
    while(fscanf(fp, "%s %d %d %d", &LogicGates[index].GateType, &LogicGates[index].OutputNode, &LogicGates[index].InputNode1, &LogicGates[index].InputNode2) == 4)
    // Print to screen
    printf("\n  %s %d %d %d", LogicGates[index].GateType, LogicGates[index].OutputNode, LogicGates[index].InputNode1, LogicGates[index].InputNode2);
    index++;
    close(fp);

Is it pseudo code or real C code?
close() is not the right function to close file pointer returned by fopen and you are missing a { }.