code

#include <stdio.h>

int main(){
    FILE *fptr;

    char ch;
    fptr = fopen("Test.txt", "r");

    if(fptr == NULL){
        printf("doesn't exist! \n");
    } else {
        fscanf(fptr, "%c", &ch);
        printf("Character in file is : %c\n", ch);
        fscanf(fptr, "%c", &ch);
        printf("Character in file is : %c\n", ch);
        fclose(fptr);
    }

    ch = 'M';
    fptr = fopen("NewFile.txt", 'w');
    fprintf(fptr, "%cANGO", ch);
    fclose(fptr);

    fptr = fopen("NewFile.txt", "r");
     printf("Character in file is : %c\n", fgetc(fptr));
     printf("Character in file is : %c\n", fgetc(fptr));
     printf("Character in file is : %c\n", fgetc(fptr));
     printf("Character in file is : %c\n", fgetc(fptr));
     printf("Character in file is : %c\n", fgetc(fptr));
     printf("Character in file is : %c\n", fgetc(fptr));
     fclose(fptr);

     fptr = fopen("NewFile.txt", "w");
     fputc('a', fptr);
     fputc('p', fptr);
     fputc('p', fptr);
     fputc('l', fptr);
     fputc('e', fptr);
     fclose(fptr);

    //  read the full file EOF
    fptr = fopen("NewFile.txt", "r");
    ch = fgetc(fptr);
    while(ch != EOF){
        printf("%c", ch);
        ch = fgetc(fptr);
    }

    printf("\n");
    fclose(fptr);

    return 0;

}