C - Files and Preprocessors Questions and Answers
Practice ModeShowing 10 of 96 questions
Q81
file *fpl, *fp2;
fp1= fopen ("one", "w");
fp2=fopen("one", "w");
fputc ('a',fpl);
fputc ('B'fp2);
fclose (fp1);
fclose(fp2);
fp1=fopen("one", "r");
fp2=fopen("one", "r");
= getc (fp2);
putchar (c);
c = getc (fp1);
putchar (c);
What is the output of the above code ?
Answer: Option D
Q82
What is the output o the following code ?
# include <stdarg.h>
show (int t, va_list ptrl)
{
int a,x,i;
a=va arg (ptr1,int);
printf("\n %d", a);
}
display (char *s, ...)
{
int x;
va_list ptr;
va_start (ptr, s);
va_start (ptr,s);
x=va_arg(ptr,int);
show (x,ptr);
}
main()
{
display ("hello", 4, 12, 13, 14, 44)
}
Answer: Option B
Q83
main (int x, char *y [ ] )
{
printf ("%d %s", x, y [1]);
}
what is the output when the program is executed as prog arg1?
Answer: Option D
Q84
Study the following statements.
#define DELAYTIME 1000
volatile extern int k;
int j;
for (i = 0; i <DELAYTIME;i++);
j=k;
State which one of the following is true.
Answer: Option B
Q85
Which ANSI C function can be used to obtain a date string from structure *tm?
Answer: Option B
Q86
What is the output of the following program /
enum mode {green, red orange, blue, white};
main ()
{
green = green + 1;
printf ("%d, %d", green, red);
}
Answer: Option C
Q87
What is the output of the following program ?
# define MAX(x, y) ((x) > (y) ? (x) : (y))
main ()
{
int x = 5, y=5;
printf ("maximum is %d", MAX (++x, ++y));
}
Answer: Option A
Q88
What is the value of CAR in the following enumeration /
enum transport
{
SCOOTER = 1, BUS=4, CAR, TRAIN=8
};
Answer: Option B
Q89
What is the value of LOTUS in the following enumeration ?
enum symbol
{
HAND, SUN, LOTUS, UMBERLLA
};
Answer: Option C
Q90
What is the output the following code ?
enum fruits
{
APPLE = 1, ORANGE=1, GRAPES=3, PINEAPPLE
};
printf ("%d",ORANGE);
Answer: Option D