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POSaving and loading a tree using fwrite / fread
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2013-11-09T19:00:00.687
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I'm a noob in C and I do have to save and load a binary tree(red black tree) that has structs as nodes, each node is RBdata: <pre><code>typedef struct RBdata_ { // The variable used to index the tree has to be called "key". TYPEKEY key; //key is of type char* int numFitxers; int *fileCount; } RBdata; </code></pre> and each node is as follows: <pre><code>typedef struct Node_ { /* For internal use of the structure. Do not change. */ struct Node_ *left; /* left child */ struct Node_ *right; /* right child */ struct Node_ *parent; /* parent */ nodeColor color; /* node color (BLACK, RED) */ /* Data to be stored at each node */ RBdata *data; /* data stored in node */ } Node; </code></pre> my problem is that I don't know where my error is, in the save function or in the load one: <pre><code>RBTree loadTree(char *name){ RBTree tree; initTree(&tree); RBdata *data; FILE *fp; if((fp=fopen(name,"r"))!=NULL){ data=malloc(sizeof(RBdata)); while(fread(&data->key,sizeof(char),MAXCHAR,fp)==1){ fread(&data->numFitxers,sizeof(int),1,fp); data->fileCount=malloc(sizeof(int)*595); fread(&data->fileCount,sizeof(int),595,fp); insertNode(&tree,data); data=malloc(sizeof(RBdata)); } fclose(fp); } else{ printf("Error: Cannot read the file.\n"); } return tree; } void saveTree(Node *a, FILE * file1) { if (a->right != NIL) saveTree(a->right,file1); if (a->left != NIL) saveTree(a->left,file1); fwrite(a->data->key, sizeof(char),MAXCHAR,file1); //key, numFiles i fileCount fwrite(&a->data->numFitxers, sizeof(int),1,file1); fwrite(a->data->fileCount, sizeof(int),595,file1); } </code></pre> When trying to load a tree I get a "segmentation fault". Could you give me some help? Thanks
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<c><save><fwrite><fread><red-black-tree>
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Saving and loading a tree using fwrite / fread
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