Converting an integer to binary in C

Question

I\'m trying to convert an integer 10 into the binary number 1010.

This code attempts it, but I get a segfault on the strcat():

int int_to_bin(int k)
{
          


        

Answer 1

short a;
short b;
short c;
short d;
short e;
short f;
short g;
short h;
int i;
char j[256];

printf("BINARY CONVERTER\n\n\n");

//uses 

while(1)
{

a=0;
b=0;
c=0;
d=0;
e=0;
f=0;
g=0;
h=0;
i=0;


gets(j);
i=atoi(j);
if(i>255){
printf("int i must not pass the value 255.\n");
i=0;
}
if(i>=128){
a=1;
i=i-128;}
if(i>=64){
b=1;
i=i-64;}
if(i>=32){
c=1;
i=i-32;}
if(i>=16){
d=1;
i=i-16;}
if(i>=8){
e=1;
i=i-8;}
if(i>=4){
f=1;
i=i-4;}
if(i>=2){
g=1;
i=i-2;}
if(i>=1){
h=1;
i=i-1;}

printf("\n%d%d%d%d%d%d%d%d\n\n",a,b,c,d,e,f,g,h);
}