Thread: how to create an array of pointers to files

hi all
i want to create an array of files. but the size of the array is not given initially, but will be read from user input. i tried this but it didn't work.

Code:

#include <stdlib.h>
#include <stdio.h>

int main(){
	
	FILE *fp;
	int t;
	int i;
	char filename[50];

	t = 8; //will be read from user input actually
	
                fp = malloc (t * sizeof(FILE*) );
	
	for ( i=0; i<t; ++i){
	                sprintf (filename, "%d.txt", i);	
		fp[i] = fopen("filename", "w");
	}
	return 0;
}

thanks a lot

another problem
i want to partition a text file into several files with the below code but each new created file only contains last partition of the input file

Code:

int main(){

	FILE* inputFile;
	FILE** fpArray;

	int t;
	int i;
	int j;
	char filename[50];
	char line[LINE_LENGTH];
	int numOfLines = 0;

	inputFile = fopen("sample.text", "r");

	//count lines
	while( fgets(line, sizeof(line), inputFile) ){
		 ++numOfLines;
	}

	t = 8; //number of partitions
	fpArray = malloc( t * sizeof(FILE*) );
	//create files
	for( i=0; i<t; ++i){
		sprintf(filename, "%d.txt", i);
		fpArray[i] = fopen(filename, "w");
	}

	for ( i=0; i<t; ++i ){

		for( j=0; j<(numOfLines/t); ++j ){

			//fgets(line, sizeof(line), inputFile);
			fscanf(inputFile, "%s", line);
			fprintf(fpArray[i], "%s", line);
		}

	}

once again thanks a lot