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Input / Output - Programming

Q1:

What will be the content of 'file.c' after executing the following program? 
#include<stdio.h>

int main()
{
    FILE *fp1, *fp2;
    fp1=fopen('file.c', 'w');
    fp2=fopen('file.c', 'w');
    fputc('A', fp1);
    fputc('B', fp2);
    fclose(fp1);
    fclose(fp2);
    return 0;
}

A B

B
A
B

C
B
B

D Error in opening file 'file1.c'

ANS:A - B

Here fputc('A', fp1); stores 'A' in the file1.c then fputc('B', fp2); overwrites the contents of the file1.c with value 'B'. Because the fp1 and fp2 opens the file1.c in write mode. Hence the file1.c contents is 'B'.