How to perform input/output

C File I/O – Table of Contents
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we will learn how to perform input/output(I/O) operations on a file using C programming language.
1. Opening a File
2. Reading a File
4. Closing a file

A Simple C Program to Open, Read and Close the file
#include <stdio.h>
int main()
{
     /* Pointer to the file */
     FILE *fp1;
     /* Character variable to read the content of file */
     char c;

     /* Opening a file in r mode*/
     fp1= fopen ("C:\\myfiles\\newfile.txt", "r");

     /* Infinite loop –I have used the break to come out of the loop*/
     while(1)
     {
        c = fgetc(fp1);
        if(c==EOF)
            break;
        else
            printf("%c", c);
     }
     fclose(fp1);
     return 0;
}
In the above program, we are opening a file newfile.txt in r mode, reading the content of the file and displaying it on the console. lets understand the each operation in detail:



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