Reading text files is a fundamental skill in C programming. Whether you need to process data from log files, configuration files, or other text-based sources, knowing how to read text files is crucial. In this beginner’s guide, we will explore the basics of reading text files in C.
This C program reads the contents of a file named “memo.txt” and prints them to the console, providing a straightforward example of how to read the contents of a file in C.
#include <stdio.h>
#define BUFSIZE 100
int main() {
// declare buffer to hold line of text read from file
char line[BUFSIZE];
// specify name of file to be read
char* filename = "memo.txt";
/* open the specified file in read mode 'r' */
FILE* fptr = fopen(filename, "r");
// check if file was opened successfully
if(fptr == NULL)
{
printf("Could not open file '%s' for reading.\n", filename);
return 1;
}
// loop through file until end of file is reached
while(!feof(fptr)) {
// read a line of text from the file into the buffer
fgets(line, BUFSIZE, fptr);
// print out the read text to the console
printf("%s", line);
}
/* close the file */
fclose(fptr);
printf("\nFile '%s' was read successfully.\n", filename);
return 0;
}I sincerely hope that you find this code helpful. If you wish to learn more about C, please subscribe to our newsletter today and continue your C learning journey with us!
