C Section

1. What does the following program print?
#include <stio.h> 
int sum,count;
void main(void)
{< BR> for(count=5;sum+=--count;)
printf("%d",sum);
}
a. The pgm goes to an infinite loop b. Prints 4791010974 c. Prints 4791001974
d. Prints 5802112085 e. Not sure

2. What is the output of the following program?
#include <stdio.h>
void main(void)
{
int i;< BR> for(i=2;i<=7;i++)
printf("%5d",fno());
}
fno()
{
staticintf1=1,f2=1,f3;
return(f3=f1+f2,f1=f2,f2=f3);
}
a. produce syntax errors b. 2 3 5 8 13 21 will be displayed c. 2 2 2 2 2 2 will be displayed
d. none of the above e. Not sure

3. What is the output of the following program?
#include <stdio.h>
void main (void)
{
int x = 0x1234;
int y = 0x5678;
x = x & 0x5678;
y = y | 0x1234;
x = x^y;
printf("%x\t",x);
x = x | 0x5678;
y = y & 0x1234;
y = y^x;
printf("%x\t",y); 
}
a. bbb3 bbb7 b. bbb7 bbb3 c. 444c 4448
d. 4448 444c e. Not sure

4. What does the following program print?
#include <stdio.h>
void main (void)
{
int x;
x = 0;
if (x=0)
printf ("Value of x is 0");
else
printf ("Value of x is not 0");
} 
a. print value of x is 0 b. print value of x is not 0 c. does not print anything on the screen
d. there is a syntax error in the if statement e. Not sure

5. What is the output of the following program? 
#include <stdio.h>
#include <string.h> 
int foo(char *);
void main (void)
{
char arr[100] = {"Welcome to Mistral"};
foo (arr);
} 
foo (char *x) 
{
printf ("%d\t",strlen (x));
printf ("%d\t",sizeof(x));
return0;
} 
a. 100 100 b. 18 100 c. 18 18 d. 18 2 e. Not sure

6. What is the output of the following program? 
#include <stdio.h> 
display()
{
printf ("\n Hello World");
return 0;
} 
void main (void)
{
int (* func_ptr) ();
func_ptr = display;
printf ("\n %u",func_ptr);
(* func_ptr) (); 
} 
a. it prints the address of the function display and prints Hello World on the screen
b. it prints Hello World two times on the screen
c. it prints only the address of the fuction display on the screen 
d. there is an error in the program e. Not sure

7. What is the output of the following program?
#include <stdio.h>
void main (void)
{
int i = 0;
char ch = 'A';
do 
putchar (ch);
while(i++ < 5 || ++ch <= 'F');
}
a. ABCDEF will be displayed b. AAAAAABCDEF will displayed 
c. character 'A' will be displayed infinitely d. none e. Not sure

8. What is the output of the following program? 
#include <stdio.h>
#define sum (a,b,c) a+b+c
#define avg (a,b,c) sum(a,b,c)/3
#define geq (a,b,c) avg(a,b,c) >= 60
#define lee (a,b,c) avg(a,b,c) <= 60
#define des (a,b,c,d) (d==1?geq(a,b,c):lee(a,b,c)) 
void main (void)
{
int num = 70;
char ch = '0';
float f = 2.0;
if des(num,ch,f,0) puts ("lee..");
else puts("geq...");
} 
a. syntax error b. geq... will be displayed c. lee.. will be displayed
d. none e. Not sure

9. Which of the following statement is correct? 
a. sizeof('*') is equal to sizeof(int) b. sizeof('*') is equal to sizeof(char)
c. sizeof('*') is equal to sizeof(double) d. none e. Not sure

10. What does the following program print? 
#include <stdio.h>
char *rev(int val); 
void main(void)
{
extern char dec[];
printf ("%c", *rev);
}
char *rev (int val)
{
char dec[]="abcde";
return dec;
}
a. prints abcde b. prints the address of the array dec
c. prints garbage, address of the local variable should not returned d. print a e. Not sure

11. What does the following program print? 
void main(void)
{
int i;
static int k;
if(k=='0')
printf("one");
else if(k== 48)
printf("two");
else
printf("three");
}
a. prints one b. prints two c. prints three
d. prints one three e. Not sure

12. What does the following program print? 
#include<stdio.h> 
void main(void)
{
enum sub
{
chemistry, maths, physics
};
struct result
{
char name[30];
enum sub sc;
};
struct result my_res;
strcpy (my_res.name,"Patrick");
my_res.sc=physics;
printf("name: %s\n",my_res.name);
printf("pass in subject: %d\n",my_res.sc);
} 
a. name: Patrick b. name: Patrick c. name: Patrick
pass in subject: 2 pass in subject:3 pass in subject:0
d. gives compilation errors e. Not sure

13. What does 
printf("%s",_FILE_); and printf("%d",_LINE_); do? 
a. the first printf prints the name of the file and the second printf prints the line no: of the second printf in the file
b. _FILE_ and _LINE_ are not valid parameters to printf function
c. linker errors will be generated d. compiler errors will be generated e. Not sure

14. What is the output of the following program? 
#include <stdio.h>
void swap (int x, int y, int t)
{
t = x;
x = y;
y = t;
printf ("x inside swap: %d\t y inside swap : %d\n",x,y);
} 
void main(void)
{
int x;
int y;
int t;
x = 99;
y = 100;
swap (x,y,t);
printf ("x inside main:%d\t y inside main: %d",x,y);
} 
a. x inside swap : 100 y inside swap : 99 x inside main : 100 y inside main : 99
b. x inside swap : 100 y inside swap : 99 x inside main : 99 y inside main : 100
c. x inside swap : 99 y inside swap : 100 x inside main : 99 y inside main : 100
d. x inside swap : 99 y inside swap : 100 x inside main : 100 y inside main : 99
e. Not sure