Decimal to Binary

[alpesh]

Quote:

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
int n,r,s=0,i=0;
clrscr();
printf("Please enter decimal number");
scanf("%d",&n);
while(n>0)
{
r=n%2;
s=s+r*pow(10,i);
n=n/2;
i=i+1;
}
printf("%d",s);
getch();
}

[GiffordBruno]

Very nice result. Thanks for this great information.

[A.J]

If you want, you could code you own 'bitset' function for C. Basically, bitset<x>(d) outputs 'd' into binary, showing 'x' bits (so if you output bitset<10>(5), it outputs 0000000101). Though the problem with that is it only converts to binary.

Good job though.

[Prabhakar Ragde]

Two possible improvements:

1) Eliminate the use of the `pow' function, which isn't needed.

2) Write a version which works for all integers n that can be represented as C ints. Currently this program only works for small nonnegative integers.

[coolgod]

a better one would be

Quote:

#include <stdio.h>

int main()
{
int n;
printf("Please input the integer you want to convert to binary:");
scanf("%d", &n);
int i;
for(i=0; i<bits; i++)
{

printf("%d", n<0);
n <<= 1;
}
printf("\n");
return 0;
}