multiplier.c
1.01 KB
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#include <stdio.h>
#include <string.h>
#include "auxiliar.h"
int check_length(char **inputs, uint8_t num_inputs)
{
int input_length = strlen(inputs[0]);
int i;
for(i = 1; i < 3; i++)
{
if(input_length != strlen(inputs[i]))
{
return -1;
}
}
return input_length;
}
int main(int argc, char **argv)
{
int i;
int pos;
if(argc != 2)
{
error();
}
char *input = argv[1];
if(!strcmp(input,"error"))
{
error();
}
char **inputs = comma_separate(input);
if(inputs == NULL)
{
error();
}
int num_inputs = num_occurrences(input,',');
if(num_inputs != 3)
{
error();
}
int input_length = check_length(inputs,num_inputs);
if(input_length == -1)
{
error();
}
int a,b,carry_in,c;
a = bin2dec(inputs[0]);
b = bin2dec(inputs[1]);
carry_in = bin2dec(inputs[2]);
c = (a*b)+carry_in;
char *result = dec2bin(c,input_length*2);
printf("%s,%.*s",result+input_length,input_length,result);
free(result);
free_mem(inputs,num_inputs);
return 0;
}