problems with my program again!

hello everyone!
my program is not working properly,
it is not summing the values that i entered.
It should take the double values and add them and also take strings and
makes the * as a multiplacation .

thanks !!!
begum


here is my program

#include<iostream>
#include<string>
#include<iomanip>
#define MAX_INPUT_SIZE 100


using namespace std;

char language;
char temp;
int i;
int k;
double i_error;
double no_star;
char e;
char s;
int main()
{
cout<<"<T>urkce or <E>nglish :";
cin>>language;

while(1)
{
if(language=='E' ||language=='e')
{
cout<<"Enter prices or <S>top:";
cin>>s;if(s =='S' ||s=='s') break;

}
else if(language=='T'||language=='t')
{
cout<<"Fiyat girin veya <Sdur:";
cin>>s;if(s =='S' ||s=='s') break;

}
char temp[MAX_INPUT_SIZE]; //input,
char array; //en basta hepsi NULL'a esit
char part1[MAX_INPUT_SIZE],part2[MAX_INPUT_SIZE] ;
// char array; // en basta hepsi NULL'a esit
int k=0;
int current_operand=1;
double sum, sum1, sum2, total;




if(i_error==0) //processing input
{
for(i=0; i<=MAX_INPUT_SIZE; i++)
{
if(temp[i]!='*'&&current_operand==1&&temp[i]!=NULL)
{
part1[i]=temp[i];
}
if(temp[i]!='*'&&current_operand==2&&temp[i]!=NULL)
{
part2[k]=temp[i];
k++;
}

if(temp[i]=='*')
{
current_operand=2;
}
}

sum1=atof(part1);
sum2=atof(part2);

if(no_star)
{
sum=sum1;
}
if(!no_star)
{
sum=sum1*sum2;
}

total=total+sum;
}

if(language=='E' ||language=='e')
{
cout<<"The total is "<<setw(12)<<total<< "$ and VAT is "
<<setw(12)<<total*(0.12)<<"$."<<endl;

}
if(language=='T'||language=='t')
{
cout<<"Toplam "<<setw(12)<<total<< "YTL ve
KDV"<<setw(12)<<total*(0.12)<<"YTL."<<endl;
}


if(language=='E'||language=='e')
{
cout<<"<N>ext or <Q>uit:" ;
}
if(language=='T'||language=='t')
{
cout<<"<D>evam veya <C>ikis:";
}

cin>>e;

if(e=='N'||e=='n'||e=='D'||e=='d')
{
system("cls");
}


if(e=='Q'||e=='q'||e=='C'||e=='c')
{
return 0;
}
return 0;
}
}

re: problems with my program again!

"begum" <begumsele@gmail.comwrote in message
news:1165434976.617765.19490@n67g2000cwd.googlegro ups.com...Ever heard of a debugger? Step through the program and see what it's doing.

Or add cout statements at key points to report whether you reach certain
points and what values exist at those points, to see where things are going
right/wrong.

-Howard

re: problems with my program again!

On 6 Dec 2006 11:56:16 -0800 in comp.lang.c++, "begum"
<begumsele@gmail.comwrote,I see that you define:
Then later you have:
So all that can be entered is a single char. How is the user supposed
to enter any prices, if he can enter only a single char?
These variables are never initialized or read in.
Also, it is a bad idea to have a variable named "array" that is not an
array.