function troubles again

Code:

---

#include <stdio.h>

float ot_pay(int, float[], float[]);
float calculate_gross(int, int, float[], float[], float[]);

main()
{

/*Variables*/

int employees, x;
float hours[30], rate[30], fed_tax[10], net_pay[10], overtime[10];

struct info
{
char first[30], last[30];

};
struct info name[100];
       
       
printf ("*****WELCOME TO THE PAYROLL CALCULATOR*****\n\n");


for (x = 1; x <=1; ++x)  /*Loop1 - Get Number of Employees*/
        {
                        printf("Please enter # of employees(1-10): ");
                        scanf("%i",&employees);
                        if (employees > 10)
                                {        printf ("Invalid Entry\n");
                                        --x;
                                }
                        if (employees < 1)
                                {        printf ("Invalid Entry\n");
                                        --x;
                                }
               
        }

for (x = 1; x <=employees; ++x)  /*Loop 2 - Get info for employees*/
        {
                printf ("\nEnter first and last name of employee #%i: ",x);
                scanf("%s %s",name[x].first, name[x].last);
                printf("Enter pay rate for employee #%i: ",x);
                scanf("%f", &rate[x]);
                printf("Enter hours worked for employee #%i: ",x);
                scanf("%f", &hours[x]);
                                        if (hours[x]<=0)
                                                {        printf ("Invalid Entry\n");
                                                        --x;
                                                }
                                        else if(rate[x]<=0)
                                                {printf ("Invalid Entry\n");
                                                        --x;
                                                }
                                       
                                        if(hours[x] > 40)
                                                {ot_pay(x, hours, rate); /*Call OT function if necessary*/
                                                }
                               
        }       

calculate_gross(x, employees, hours, rate, overtime);
       
}

float ot_pay(int x,float hours[],float rate[])
{       
        float overtime[10];
        overtime[x] = (hours[x]-40)*rate[x]*1.5;
        printf("OT $%.2f\n\n",overtime[x]);
        return overtime[x];
}       


float calcualte_gross(int x, int employees, float hours[], float rate[], float overtime[])
{
for (x = 1; x <= employees; ++x)
                {       
                        float gross_pay[30];
                        gross_pay[x]=hours[x]*rate[x]+overtime[x]/3;
                        return gross_pay[x];
                       
                }
}

---

*undefined reference to calculate_gross* in red

Dont know why this is not working. Any advice???

Once again, carefully compare your function declaration with its definition:

Code:

---

float calculate_gross(int, int, float[], float[], float[]);

---

Code:

---

float calcualte_gross(int x, int employees, float hours[], float rate[], float overtime[])

---

One thing you can do to avoid this is to write out the function prototype in full, and then copy it for writing the function definition, or vice versa. I would then expect this as the prototype:

Code:

---

float calculate_gross(int x, int employees, float hours[], float rate[], float overtime[]);

---

ok well im just trying to understand this.


I thought when i do the prototype it just something like:

Code:

---

float name(int, float[], float[]);

---

then i thought when u call it its

Code:

---

name(variable1, variable2, variable3);

---

then when u are defining it you:

Code:

---

float name(variable1, float variable2[], float variable3[])
{

}
return

---

is this right??

Quote:

---

Originally Posted by wwwildbill

ok well im just trying to understand this.


I thought when i do the prototype it just something like:

Code:

---

float name(int, float[], float[]);

---

then i thought when u call it its

Code:

---

name(variable1, variable2, variable3);

---

then when u are defining it you:

Code:

---

float name(variable1, float variable2[], float variable3[])
{

}
return

---

is this right??

---

Not quite (you still need a type on variable1). You can drop the names in the prototype; you shouldn't, but you can.

You also need to spell "calculate" correctly three times in a row.