/* ToiletPapperNumber34 Calcualtor 2014-01-24 v1.0      *
 * file:main.c                                          *
 * Compile:gcc -o ToiletPapperNumber34Calcualtor main.c *
 * gcc(1):http://gcc.gnu.org/releases.html              *
 * gcc(2):http://www.bloodshed.net/download.html        *
 * Credits:w2ch.org-Anon                                */

#include <stdio.h> //fprintf()

int main(int argc, char **argv)
{
    if(argc!=4)
    {
        fprintf(stderr, "Usage:%s <number in ToiletPapperNumber34 or in decimal with []> <+ or - or / or m(for multiplication as * dose not work for me)> <number in ToiletPapperNumber34 or in decimal with []>\n"
                        "e.g1: %s 1/2 + 1/2 e.g2: %s [3]6 m 1/2", argv[0], argv[0], argv[0]);
        return 0;
    }

    int nLigthWorld0 = 0;
    int nDarkWorld0  = 0;
    int nLigthWorld1 = 0;
    int nDarkWorld1  = 0;
    char cOaktree = 0; //used first as temp value for the "2" first values

    //get argv[1] value
    if(argv[1][cOaktree] == '[')
    {
         for(++cOaktree; argv[1][cOaktree] != '\0' && argv[1][cOaktree] != ']'; nDarkWorld0 += (int)(argv[1][cOaktree] & 15), ++cOaktree) nDarkWorld0 *= 10;
         if(argv[1][cOaktree] == ']')
             for(++cOaktree; argv[1][cOaktree] != '\0'; nLigthWorld0 += (int)(argv[2][cOaktree] & 15), ++cOaktree) nLigthWorld0 *= 10;
         nLigthWorld0 = nLigthWorld0 * nDarkWorld0;
    }
    else
    {
         for(; argv[1][cOaktree] != '\0' && argv[1][cOaktree] != '/'; nLigthWorld0 += (int)(argv[1][cOaktree] & 15), ++cOaktree) nLigthWorld0 *= 10;
         if(argv[1][cOaktree] == '/')
             for(++cOaktree; argv[1][cOaktree] != '\0'; nDarkWorld0 += (int)(argv[1][cOaktree] & 15), ++cOaktree) nDarkWorld0 *= 10;
         else ++nDarkWorld0;
    }

    cOaktree = 0;
    //get argv[3] value
    if(argv[3][cOaktree] == '[')
    {
         for(++cOaktree; argv[3][cOaktree] != '\0' && argv[3][cOaktree] != ']'; nDarkWorld1 += (int)(argv[3][cOaktree] & 15), ++cOaktree) nDarkWorld1 *= 10;
         if(argv[3][cOaktree] == ']')
             for(++cOaktree; argv[3][cOaktree] != '\0'; nLigthWorld1 += (int)(argv[3][cOaktree] & 15), ++cOaktree) nLigthWorld1 *= 10;
         nLigthWorld1 = nLigthWorld1 * nDarkWorld1;
    }
    else
    {
         for(; argv[3][cOaktree] != '\0' && argv[3][cOaktree] != '/'; nLigthWorld1 += (int)(argv[3][cOaktree] & 15), ++cOaktree) nLigthWorld1 *= 10;
         if(argv[3][cOaktree] == '/')
             for(++cOaktree; argv[3][cOaktree] != '\0'; nDarkWorld1 += (int)(argv[3][cOaktree] & 15), ++cOaktree) nDarkWorld1 *= 10;
         else ++nDarkWorld1;
    }


    //get operation from argv[2]
    cOaktree = argv[2][0];
    if(cOaktree != '-' && cOaktree != '+' && cOaktree != 'm' && cOaktree != '/')
    {
         fprintf(stdout, "ERROR:+ or - or / or m(for multiplication as * dose not work for me)");
         return 0;
    }

    if((!nLigthWorld0) || (!nLigthWorld1) || (!nDarkWorld0) || (!nDarkWorld1)) fprintf(stdout, "ERROR:One or more of the value you puted in is zero");

    //================================================================
    fprintf(stdout, "%d/%d(%.3f) %c %d/%d(%.3f) = ", nLigthWorld0, nDarkWorld0, (float)nLigthWorld0/nDarkWorld0, cOaktree, nLigthWorld1, nDarkWorld1, (float)nLigthWorld1/nDarkWorld1);
    switch(cOaktree)
    {
        case '+':
             nLigthWorld0 += nLigthWorld1;
             nDarkWorld0  += nDarkWorld1;
             break;
        case '-':
             nLigthWorld0 -= nLigthWorld1;
             nDarkWorld0  -= nDarkWorld1;
             break;
        case 'm':
             nLigthWorld0 *= nLigthWorld1;
             nDarkWorld0  *= nDarkWorld1;
             break;
        case '/':
             nLigthWorld0 /= nLigthWorld1;
             nDarkWorld0  /= nDarkWorld1;
             break;
        default:
             break;
    }
    if((!nLigthWorld0) || (!nDarkWorld0)) fprintf(stdout, "ERROR:The result is divided by zero");
    else fprintf(stdout, "%d/%d(%.3f)", nLigthWorld0, nDarkWorld0, (float)nLigthWorld0/nDarkWorld0);

    return 0;
}