a string to braifuck converter

str2bf

/*A stupid str2bf converter!*/


#include <stdio.h>
#define MAX 100
int win=10;
char cell[MAX]={0};
int curr=0;

/*Find a number as a multiple of ten */
void divmod(int num,int *div,int *mod)
{
    *div=num/10;
    *mod=num%10;
}

/*Finds a cell closer then 10 cells away which has a value near to the value which you have to print*/
int find_closest(int *val,int *pos,char c)
{
    int i,flag=0;
    for(i=curr-10;i<curr+10;i++){
        if(cell[i]-c<=10 && cell[i]-c>=-10){
            *val=cell[i]-c;
            *pos=i;
            flag=1;
            break;
        }
    }

    if(!flag)
        return 0;

    return 1;
}

/*Moves to an empty cell*/
void on_empty_cell()
{
    while(cell[curr]){
        putchar('>');
        curr++;
    }

}


void bf_gen(char c)
{
    int div,mod;
    int s,i,tmp;
    int seek,seek_ptr,pos,val;
    int win_cell;
    char t,mutate;
    divmod(c,&div,&mod);

/*Suppose you have to print 'b' and the value of just the previous cell is 'a' then you
 *don't need to reduntatly generate a loop for it all you have to do is:-
 *<+. and BANG!
 *This is what this piece of code does
*/
    if(find_closest(&val,&pos,c)){
        seek=(curr<pos)?pos-curr:curr-pos;

        seek_ptr=(curr<pos)?'>':'<';
        curr=pos;
        for(i=0;i<seek;i++)
            putchar(seek_ptr);

        mutate=(val<0)?'+':'-';
        val=(val<0)?-val:val;

        for(i=0;i<val;i++){
            putchar(mutate);
            if(mutate=='-')cell[curr]--;
            else cell[curr]++;
        }

    }
/*This block generate a loop,if the character has value 65,then it will div mod by 10 to get 6 & 5
 * now simply we can generate a loop like
 * ++++++++++[>++++++<-]>. BANG!
 * Now that is what this long block do!
*/
    else{
        on_empty_cell();
        win_cell=curr;
        for(i=0;i<win;i++){
            putchar('+');cell[curr]++;
        }
        s=tmp=curr;
        putchar('[');
        on_empty_cell();

        for(i=0;i<div;i++)
            putchar('+');
        for(i=0;i<win*div+mod;i++)
            cell[curr]++;

        tmp=s;
        for(;tmp<curr;tmp++)
            putchar('<');

        putchar('-');cell[win_cell]--;
        putchar(']');
        tmp=s;
        for(;tmp<curr;tmp++)
            putchar('>');

        for(i=0;i<mod;i++)
            putchar('+');

    }

    putchar('.');
}



int main()
{
    char str[50];
    char *p=str;
    fgets(str,sizeof(str),stdin);
    while(*p){
        bf_gen(*p);
        p++;
        }
    return 0;

}