Binary to Decimal Using Command Line Arguments

Note: Please go through Command Line Arguments Post before preparing for these questions. The theory there  for TCS command line Program will help you in better understanding .

#include <stdio.h>
int main(int argc, char *argv[])
{
int num,binary,decimal=0,rem,base=1;
num=atoi(argv[1]);
binary=num;
while(num>0)
{
rem=num%2;
decimal =rem*base;
num=num/10;
base=base*2;
}
printf("%d",decimal);
return 0;
}