Thread: decimal to binary

this program suppose to change decimal number to binary..
but..
when i run this program, somehow this does not terminate the loop.
I put break; command to terminate the loop.. but, it doesn't work i think..
but after manually terminate the loop, it displays right answer though..

Code:

#include <stdio.h>

main() 
{ 
char bData[100]; 
int count=0;
int inData;
int i;
int n = 1;
int tmp; 

printf("Enter a number: ");
scanf("%d\n", &inData); 
tmp = inData; 
count = 0; 

for(;;)  
{ 
bData[count] = tmp%2; 

if(tmp < 2) 
break; 

tmp /= 2; 
count++; 
}

printf("Binary number for %d is ",inData); 
for(i=count; i>=0; i--) 
{
printf("%1d",bData[i]); 
}
}

oops i used code tag wrong...

this program suppose to change decimal number to binary..
but..
when i run this program, somehow this does not terminate the loop.
I put break; command to terminate the loop.. but, it doesn't work i think..
but after manually terminate the loop, it displays right answer though..

Code:

#include <stdio.h>

main() 
{ 
char bData[100]; 
int count=0;
int inData;
int i;
int n = 1;
int tmp; 

/*Get input */
printf("Enter a number: ");
scanf("%d\n", &inData); 
tmp = inData; 
count = 0; 

for( ; ; )  /*infinite loop. stop when the number is less than 2 */
{ 
bData[count] = tmp%2; 

if(tmp < 2) 
break; 

tmp /= 2; 
count++; 
}

printf("Binary number for %d is ",inData); 
for(i=count; i>=0; i--) 
{
printf("%1d",bData[i]); 
}
}

Thank you~!!!
it Works!!!

there's an easier way to do it:

Code:

int count, value,temp;
value = 56; //any number would do. this program only reads the first 8 bits
//however, you can make count=31 to make it 32 bits. 
temp = value;
for (count=7;count >= 0;count--) 
    printf("%c",temp & (2 << count) ? '1' : '0');

//edit: changed 7 to count... thanks salem for alerting me to things like that