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 C interview questions  C Interview Questions
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Question 
44.what is the difference between strcpy() and memcpy()
function?
45.what is output of the following statetment?
46.Printf(“%x”, -1<<4); ?
47.will the program compile?
       int i;
       scanf(“%d”,i);
       printf(“%d”,i);
48.write a string copy function routine?
49.swap two integer variables without using a third
temporary variable?
50.how do you redirect stdout value from a program to a file?
51.write a program that finds the factorial of a number
using recursion?
 Question Submitted By :: Avula_sujatha@yahoo.co.in
I also faced this Question!!     Rank Answer Posted By  
 
  Re: 44.what is the difference between strcpy() and memcpy() function? 45.what is output of the following statetment? 46.Printf(“%x”, -1<<4); ? 47.will the program compile? int i; scanf(“%d”,i); printf(“%d”,i); 48.write a string copy function routine? 49.swap two integer variables without using a third temporary variable? 50.how do you redirect stdout value from a program to a file? 51.write a program that finds the factorial of a number using recursion?
Answer
# 1		 
49.#include<stdio.h>
   main()
   {
    int a,b;
    scanf("%d%d",&a,&b);
    a=a+b;
    b=a-b;
    a=a-b;
    printf("%d%d",a,b);
   }
 
Is This Answer Correct ?    2 Yes 0 No
Vidya V
 
  Re: 44.what is the difference between strcpy() and memcpy() function? 45.what is output of the following statetment? 46.Printf(“%x”, -1<<4); ? 47.will the program compile? int i; scanf(“%d”,i); printf(“%d”,i); 48.write a string copy function routine? 49.swap two integer variables without using a third temporary variable? 50.how do you redirect stdout value from a program to a file? 51.write a program that finds the factorial of a number using recursion?
Answer
# 2		 
#include<stdio.h>
#include<conio.h>
void fact();
void main()
{
clrscr();
fact();
getch();
}
void fact()
{
int n,f;
scanf("%d",&n);
if(n==1)
{
return(1);
}
else
{
f=(n*fact(n-1));
printf("%d",f);
}
}
 
Is This Answer Correct ?    1 Yes 0 No
Dhina
 
 
 
  Re: 44.what is the difference between strcpy() and memcpy() function? 45.what is output of the following statetment? 46.Printf(“%x”, -1<<4); ? 47.will the program compile? int i; scanf(“%d”,i); printf(“%d”,i); 48.write a string copy function routine? 49.swap two integer variables without using a third temporary variable? 50.how do you redirect stdout value from a program to a file? 51.write a program that finds the factorial of a number using recursion?
Answer
# 3		 
46.
   0000000000000001
47.The progrm will compile,because it is syntactically 
correct.
51.
#include<stdio.h>
int fact(int n){
 if(n==0||n==1)
 return(1);
 else
 return(n*fact(n-1));
 }
void main(){
 int a,b;
 printf("Enter number:-");
 scanf("%d",&a);
 b=fact(a);
 printf("\nThe factorial value of the number:- %d",b);
 }
 
Is This Answer Correct ?    1 Yes 1 No
Swastisundar Bose
 

 
 
 
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