Input / Output - General Questions Multiple Questions and Answers.
Exercise Questions ::
Input / Output
11. 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. B B C. A B D. Error in opening file 'file1.c'
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Answer: Option A
Explanation:
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'.
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Published by:Michael Daani
12. What will be the output of the program?
#include<stdio.h>
int main()
{
int k=1 ;
printf("%d == 1 is" "%s\n" , k, k==1 ?"TRUE" :"FALSE" );
return 0 ;
} A. k == 1 is TRUE B. 1 == 1 is TRUE C. 1 == 1 is FALSE D. K == 1 is FALSE
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Answer: Option B
Explanation:
Step 1 : int k=1; The variable k is declared as an integer type and initialized to '1'.
Step 2: printf("%d == 1 is" "%s\n", k, k==1?"TRUE":"FALSE"); becomes
=> k==1?"TRUE":"FALSE"
=> 1==1?"TRUE":"FALSE"
=> "TRUE"
Therefore the output of the program is 1 == 1 is TRUE
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Published by:Michael Daani
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