Opperand variable type errors.

cheifjoe87 · #1 07-Nov-2009, 22:33

Ok the source code for the program is listed below,along with the program outline.

And here are the problems with the program that im experiencing.

Wedit output window build: Fri Nov 06 16:57:55 2009
e:\cop2000\project6\#6.c:
Error #6.c: 47 operands of / have illegal types 'pointer to int' and 'double'
Error #6.c: 47 operands of = have illegal types 'pointer to int' and 'int'
Error #6.c: 48 operands of / have illegal types 'pointer to int' and 'double'
Error #6.c: 48 operands of = have illegal types 'pointer to int' and 'int'
Error #6.c: 49 operands of / have illegal types 'pointer to int' and 'double'
Error #6.c: 49 operands of = have illegal types 'pointer to int' and 'int'
Error #6.c: 50 operands of / have illegal types 'pointer to int' and 'double'
Error #6.c: 50 operands of = have illegal types 'pointer to int' and 'int'
Error #6.c: 54 operands of / have illegal types 'pointer to int' and 'double'
Error #6.c: 54 operands of = have illegal types 'pointer to int' and 'int'
Error #6.c: 55 operands of / have illegal types 'pointer to int' and 'double'
Error #6.c: 55 operands of = have illegal types 'pointer to int' and 'int'
Error #6.c: 56 operands of / have illegal types 'pointer to int' and 'double'
Error #6.c: 56 operands of = have illegal types 'pointer to int' and 'int'
Error #6.c: 57 operands of / have illegal types 'pointer to int' and 'double'
Error #6.c: 57 operands of = have illegal types 'pointer to int' and 'int'
Compilation + link time:0.6 sec, Return code: 1

/*Problem: write a program to dispense change.The user enters the ammount paid and the
ammount due.The program determines how many dollars,quarters,dimes,nickles,pennies to give as change.
write a function with four parameters that determines the quantity of each kind of coin.Also the
program needs a for loop so the user can stop when the wish.

CPP / C++ / C Code:

#include <stdio.h>
#define Quarters_1 0.25
#define Dimes_1 0.10
#define Nickles_1 0.5
#define Pennies_1 0.1
#define Quarters_2 0.25
#define Dimes_2 0.10
#define Nickles_2 0.5
#define Pennies_2 0.1
void Ammount_P(int *quarters_1,int *dimes_1,int *nickles_1,int *pennies_1,int *ammount_paid);
void Ammount_D(int *quarters_2,int *dimes_2,int *nickles_2,int *pennies_2,int *ammount_due);
int main(void)
{
int quarters_1,dimes_1,nickles_1,pennies_1,quarters_2,dimes_2,nickles_2,pennies_2,
ammount_paid,ammount_due,input = -1,end = 0;

while ( input != 0 )
{
printf("Enter integer zero to exit program or integer 1 to continue program > ");
scanf("%d",&input);
end = end + input;
}
while (input == 1)
{
printf("Enter the ammount paid.");
scanf("%d",&ammount_paid);
printf("\nEnter the ammount due.");
scanf("%d",&ammount_due);

Ammount_P(&quarters_1,&dimes_1,&nickles_1,&pennies_1,&ammount_paid);
Ammount_D(&quarters_2,&dimes_2,&nickles_2,&pennies_2,&ammount_due);

printf("The ammount paid is QUARTERS %d,DIMES %d,NICKLES %d,PENNIES %d",
quarters_1,dimes_1,nickles_1,pennies_1);
printf("The ammount due is QUARTERS %d,DIMES %d,NICKLES %d,PENNIES %d",
quarters_2,dimes_2,nickles_2,pennies_2);
}
return(0);
}
void Ammount_P(int *quarters_1,int *dimes_1,int *nickles_1,int *pennies_1,int *ammount_paid)
{
quarters_1 = ammount_paid / Quarters_1;
dimes_1 = ammount_paid / Dimes_1;
nickles_1 = ammount_paid / Nickles_1;
pennies_1 = ammount_paid / Pennies_1;
}
void Ammount_D(int *quarters_2,int *dimes_2,int *nickles_2,int *pennies_2,int *ammount_due)
{
quarters_2 = ammount_due / Quarters_2;
dimes_2 = ammount_due / Dimes_2;
nickles_2 = ammount_due / Nickles_2;
pennies_2 = ammount_due / Pennies_2;
}

fakepoo · #2 08-Nov-2009, 08:11

CPP / C++ / C Code:

Ammount_P(&quarters_1,&dimes_1,&nickles_1,&pennies _1,&ammount_paid);

Here, there is a space between "&pennies" and "_1". Could this be causing your error?

Howard_L · #3 08-Nov-2009, 08:13

Quote:

The user enters the amount paid and the amount due?

Where is this place , I'd like to shop there. I got a big-A change sack to bring too!

Is that the way the assignment reads?

Why didn't you take the time to learn to use code tags for the code in your post?
PLEASE READ THE GUIDELINES to learn how to post rightly.

Well first look carefully and you will see a problem with two of these:

CPP / C++ / C Code:

#define Dimes_1    0.10
#define Nickles_1  0.5
#define Pennies_1  0.1

When I compile your code ("/*Problem: ..." as line 1) I get:

Code:

forums>  gcc -Wall -W -pedantic  091108_coins-1.c -o 091108_coins-1
091108_coins-1.c:35: error: ‘pennies’ undeclared (first use in this function)
091108_coins-1.c:35: error: expected ‘)’ before ‘_1’
091108_coins-1.c:35: error: too few arguments to function ‘Ammount_P’
091108_coins-1.c:36: error: expected ‘)’ before ‘_2’
091108_coins-1.c:36: error: too few arguments to function ‘Ammount_D’
091108_coins-1.c: In function ‘Ammount_P’:
091108_coins-1.c:47 (thru 50) : error: invalid operands to binary /
091108_coins-1.c:54 (thru 57) : error: invalid operands to binary /

So start with a look at line 35 and 36:

CPP / C++ / C Code:

void Ammount_P(int *quarters_1,int *dimes_1,int *nickles_1,int *pennies_1,int *ammount_paid)
{
    Ammount_P(&quarters_1,&dimes_1,&nickles_1,&pennies _1,&ammount_paid); /*line 35*/
Ammount_D(&quarters_2,&dimes_2,&nickles_2,&pennies _2,&ammount_due);

Same as fakepoo said... do you see the typo in each line?
Now on to 47, 48, 49 and 50:

CPP / C++ / C Code:

  quarters_1 = ammount_paid / Quarters_1;
  dimes_1 = ammount_paid / Dimes_1;
  nickles_1 = ammount_paid / Nickles_1;
  pennies_1 = ammount_paid / Pennies_1;

My error says: "error: invalid operands to binary /"
Yours is even more descriptive: "operands of / have illegal types 'pointer to int' and 'double'"
If you look at the function parameters you will see they are all pointers.
What you have tries to divide a pointer by a value and store that as a pointer. That get's a big "NO WAY DUDE!" from the compiler.
What you need to do instead is use the "*" operator to "dereference" each pointer (use the value stored at that address) like this:

CPP / C++ / C Code:

*quarters_1 = *ammount_paid / Quarters_1;

You have the same problem for the errors on lines 54 , 55 , 56 and 57. ( but you knew that)
BTW, "ammount" is spelt "amount".

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Opperand variable type errors.

Re: Opperand variable type errors.

Re: Opperand variable type errors.