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Question
Finding a number which was log of base 2
 Question Submitted By :: Guest
I also faced this Question!!     Rank Answer Posted By  
 
  Re: Finding a number which was log of base 2
Answer
# 1
log of base 2 means given variable is power of 2. So 

void main(){
     int x;
     if(x&(x-1){ 
        printf("Given Number is not log base 2\n");
     }
 
}
 
Is This Answer Correct ?    5 Yes 1 No
Jaganathan Gnanavelu
 

 
 
 
Other C Code Interview Questions
 
  Question Asked @ Answers
 
#define clrscr() 100 main() { clrscr(); printf("%d\n",clrscr()); }  1
Write a prog to accept a given string in any order and flash error if any of the character is different. For example : If abc is the input then abc, bca, cba, cab bac are acceptable, but aac or bcd are unacceptable. Microsoft5
Is there any difference between the two declarations, 1. int foo(int *arr[]) and 2. int foo(int *arr[2])  1
main() { static char names[5][20]={"pascal","ada","cobol","fortran","perl"}; int i; char *t; t=names[3]; names[3]=names[4]; names[4]=t; for (i=0;i<=4;i++) printf("%s",names[i]); }  1
main() { int c[ ]={2.8,3.4,4,6.7,5}; int j,*p=c,*q=c; for(j=0;j<5;j++) { printf(" %d ",*c); ++q; } for(j=0;j<5;j++){ printf(" %d ",*p); ++p; } }  1
main( ) { int a[ ] = {10,20,30,40,50},j,*p; for(j=0; j<5; j++) { printf(“%d” ,*a); a++; } p = a; for(j=0; j<5; j++) { printf(“%d ” ,*p); p++; } }  1
main( ) { void *vp; char ch = ‘g’, *cp = “goofy”; int j = 20; vp = &ch; printf(“%c”, *(char *)vp); vp = &j; printf(“%d”,*(int *)vp); vp = cp; printf(“%s”,(char *)vp + 3); }  1
main() { char *p = "hello world"; p[0] = 'H'; printf("%s", p); } a. Runtime error. b. “Hello world” c. Compile error d. “hello world” HCL1
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main(int argc, char *argv[]) { (main && argc) ? main(argc-1, NULL) : return 0; } a. Runtime error. b. Compile error. Illegal syntax c. Gets into Infinite loop d. None of the above HCL1
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#include<stdio.h> main() { int a[2][2][2] = { {10,2,3,4}, {5,6,7,8} }; int *p,*q; p=&a[2][2][2]; *q=***a; printf("%d----%d",*p,*q); }  1
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Given a list of numbers ( fixed list) Now given any other list, how can you efficiently find out if there is any element in the second list that is an element of the first list (fixed list) Disney3
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main() { show(); } void show() { printf("I'm the greatest"); }  1
 
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