Give a oneline C expression to test whether a number is a
power of 2?
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Answer / dan
if (x & (x-1)) // false only if x is a power of 2
| Is This Answer Correct ? | 102 Yes | 8 No |
Answer / ashutosh
I think
if (x & (x-1)) wont work when number is negative.
| Is This Answer Correct ? | 12 Yes | 10 No |
Answer / fjords
if (int(log(x)) == log(x)) // log is to the base 2
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / rahul priyadarshi
#define ISPOW2(x) ((x==1)?1:(x&(x-1)))?0:1
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / yevgen
if ((num XOR (num - 1)) == num + num - 1) return true;
else return false;
| Is This Answer Correct ? | 1 Yes | 0 No |
How will you print % character? a. printf(“\%”) b. printf(“\\%”) c. printf(“%%”) d. printf(“\%%”)
main() { 41printf("%p",main); }8
main ( ) { static char *s[ ] = {“black”, “white”, “yellow”, “violet”}; char **ptr[ ] = {s+3, s+2, s+1, s}, ***p; p = ptr; **++p; printf(“%s”,*--*++p + 3); }
main() { int i=0; for(;i++;printf("%d",i)) ; printf("%d",i); }
Display the time of the system and display the right time of the other country
write a function to give demostrate the functionality of 3d in 1d. function prototye: change(int value,int indexX,int indexY,int indexZ, int [] 1dArray); value=what is the date; indexX=x-asix indexY=y-axis indexZ=z-axis and 1dArray=in which and where the value is stored??
pls anyone can help me to write a code to print the values in words for any value.Example:1034 to print as "one thousand and thirty four only"
#include<stdio.h> main() { struct xx { int x; struct yy { char s; struct xx *p; }; struct yy *q; }; }
Given a spherical surface, write bump-mapping procedure to generate the bumpy surface of an orange
int i,j; for(i=0;i<=10;i++) { j+=5; assert(i<5); }
main() { register int a=2; printf("Address of a = %d",&a); printf("Value of a = %d",a); }
main() { extern int i; i=20; printf("%d",i); }
C Code 
