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31.

What will be the output of the program ?

#include

int main()

{

FILE *fs, *ft;

char c[10];

fs = fopen("source.txt", "r");

c[0] = getc(fs);

fseek(fs, 0, SEEK_END);

fseek(fs, -3L, SEEK_CUR);

fgets(c, 5, fs);

puts(c);

return 0;

}

A.	things	B.	thing
C.	ngs	D.	Error in fseek();

32.

Identify X library function for line input and output?

#include

int X(char *s, FILE *iop)

{

int c;

while (c = *s++)

putc(c, iop);

return ferror(iop) ? EOF : 0;

}

A.	getc	B.	putc
C.	fgets	D.	fputs

33.

What is the output of this C code?

#include

int main()

{

int n;

scanf("%d", &n);

ungetc(n, stdin);

scanf("%d", &n);

printf("%d\n", n);

return 0;

}

A.	Compile time error	B.	Whatever is typed by the user first time.
C.	Whatever is typed by the user second time	D.	Undefined behaviour

34.

What will be the content of 'file.c' after executing the following program?

#include

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
C.	0	D.	Error in opening file 'file1.c'

35.

What is the output of this C code?

#include

int main(){

FILE *fp1,*fp2;

fp1=fopen("1.text","r");

fp2=fopen("2.txt","r");

fclose(fp1,fp2);

return 0;

}

A.	fp1 Closed	B.	fp2 Closed
C.	0	D.	Compiler error

36.

#include<stdio.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <unistd.h>

int main()

{

struct stat statbuf;

FILE *fb = fopen("/home/jeegar/","r");

if(fb==NULL)

printf("its null\n");

else

printf("not null\n");

stat("/home/jeegar/", &statbuf);

if(S_ISDIR(statbuf.st_mode))

printf("directory\n");

else

printf("file\n");

return 0;

}

A.	its null directory	B.	not null directory
C.	0	D.	Compile time error

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