Thread: Compiling Error

I need help with the calc function and the error i'm getting. thanks

Code:

#include <stdio.h>


void getInput(int* pNum1, int* pNum2);
void calc(int num1, int num2, int* pSum, int* pQuotient, int* pRemainder,
double* pHalfNum1, double* pHalfNum2, double* pFraction, int* pAlgebra);
int intOps(int num1, int num2, int* pSum, int* pQuotient, int* pRemainder,
int* pAlgebra);
double doubleOps(int num1, int num2, double* pHalfNum1, double* pHalfNum2,
double* fraction);
void display(int num1, int num2, int sum, int quotient, int remainder,
double halfNum1, double halfNum2, double fraction);


int main(void)
{
   int num1, num2;
   int sum, quotient, remainder;
   double halfNum1, halfNum2, fraction;
   int algebra;


   getInput(&num1, &num2);
   calc(num1, num2, &sum, &quotient, &remainder, &halfNum1, &halfNum2,
   &fraction, &algebra);


   return 0;
}


void getInput(int* pNum1, int* pNum2)
{
   printf("\nName: Danielle Evans");
   printf("\nPlease enter two integers : ");
   scanf("%d%d", pNum1, pNum2);
}


void calc(int num1, int num2, int* pSum, int* pQuotient, int* pRemainder,
double* pHalfNum1, double* pHalfNum2, double* pFraction, int* pAlgebra)
{


}


int intOps(int num1, int num2, int* pSum, int* pQuotient, int* pRemainder,
int* pAlgebra)
{
   *pSum = num1 + num2;
   *pQuotient = num1 / num2;
   *pRemainder = num1 % num2;
   *pAlgebra = 2 * num1 + 4 * num2 + num1 * num2 - num1 / num2;
}


double doubleOps(int num1, int num2, double* pHalfNum1, double* pHalfNum2,
double* pFraction)
{
   *pHalfNum1 = num1 / 2.0;
   *pHalfNum2 = num2 / 2.0;
   *pFraction = num1 / (double)num2;
}


void display(int num1, int num2, int sum, double halfNum1, double halfNum2,
int quotient, int remainder, double fraction, int algebra)
{
   printf("\n%20s%20s", "Description", "Data");
   printf("\n%20s%20s", "-----------", "----");
   printf("\n%20s%20d", "Input 1", num1);
   printf("\n%20s%20d", "Input 2", num2);
   printf("\n%20s%20d", "Sum", sum);
   printf("\n%20s%20.1lf", "Half of input 1", halfNum1);
   printf("\n%20s%20.1lf", "Half of input 2", halfNum2);
   printf("\n%20s%20d", "Quotient", quotient);
   printf("\n%20s%20d", "Remainder", remainder);
   printf("\n%20s%20.4lf", "Fraction", fraction);
   printf("\n%20s%20d", "Algebra", algebra);
}

My error :

Code:

projectTwo.c:60: error: conflicting types for 'display'projectTwo.c:11: error: previous declaration of 'display' was here
projectTwo.c:60: error: conflicting types for 'display'
projectTwo.c:11: error: previous declaration of 'display' was here

Okay I figured out the error. Now I just need help with the calc function.