File read in C | File Handling | How to read File

#include<stdio.h>
    #include<stdlib.h>
    
    int main(){
        char ch;
        FILE *f_pointer;
        f_pointer = fopen("./example.txt", "r");
    
        if(f_pointer == NULL){
            perror("Error Occurs!!");
            exit(EXIT_FAILURE);
        }
        printf("Content of the File : \n");
        
        ch = fgetc(f_pointer);
        while (ch != EOF)
        {
            printf("%c", ch);  // printing one by one characters from the file
            ch = fgetc(f_pointer);
        }
    
        fclose(f_pointer);
        return 0;
    }

• ‘ch’ variable store the latest seek pointer where read the file.
• f_pointer is a file pointer.
• using the file fopen() function open the file. fopen() function take two arguments first argument is filename of file and second argument mode in which mode open the file.
• check condition if (f_pointer == NULL) → perror("Error Occur") and perror() function also print the error that means whats error occur, and the exit to the program otherwise.
• print content of the file.
• ch == fgetc(f_pointer), ch hold the seek pointer where read the file.
• and while ch ≠ EOF.
• EOF → End of the file.
• When ch is not reach to the end of the file then read the content and printing one by one character.
• At last close the file using fclose() function.