Thread: bin2dec

I am writing a program for opengl that converts a file of 0 and 1 to the hex format. If you know about opengl it is going to be for stippled polygons. I am going to convert them to integers first, then hex. Here is what I have. I don't have a compile to check. but is this an efficient way of doing this? and will it work?

Code:

#include <stdio.h>

int bin2dec(char *dec);

int main(void){
	FILE *infile;
	int retval;
	char buffer[8]={0}; /*0-7 + '\0'*/
	infile=fopen(argv[1],"rb");
	while(fread(buffer,sizeof buffer,1,infile)!=NULL){
		retval=bin2dec(buffer);
	/*rest of code*/
         }
	return 0;
}

int bin2dec(char *dec){
	int x=0, temp,total=0;
	while(dec[x]!='\0' || dec[x]!='\n'){
		if(dec[x]=='1'){
			temp=pow(x,2);
			total+=temp;
			x++;
		}
		if(dec[x]=='0'){
			continue;
		}
	}
}

[EDIT]This is for my own use and I will assume I wrote the file in a square that is a multiple of 8[/EDIT]

Why not strtol?

Code:

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
   const char binary[] = "11001";
   int decimal = strtol(binary, NULL, 2);
   printf("binary = \"%s\", decimal = %d = 0x%02X\n",
          binary, decimal, decimal);
   return 0;
}

/* my output
binary = "11001", decimal = 25 = 0x19
*/

[edit]Found my crayons and added color.