Help with Minimum Program in C++ - Overclock.net

tsmith118 · 10-05-09

I need help writing a program to output a minimum of a set of data.
my input file is 99 77 33 55 66 33.3 34 6.0 7.2 3.4 6 7.2 3.4 6.0 7.2
my ouput before i commented out looked as follows:
X Y Z Minimum

99.0 77.0 33.0
55.0 66.0 33.3
34.0 6.0 7.2
3.4 6.0 7.2
3.4 6.0 7.2
Right now as it is written, my code will output my minimum as follows:
33
33.3
6
3.4
3.4

All of that is right, I just need to combine the 2. I am trying to create an output data file so I can then read that data back into the output file I need. Can anyone offer any suggestions?

Note, the code part that is commented out produces an error of redefinition of `int main()'

Code:

#include <fstream> 
#include <iomanip>
#include <iostream> 

using namespace std;
ofstream outfile("min.dat""out.txt");
int main(); 


int min(int x, int y, int z)
//99, 77, 33
{
    if (x>y)
    if (y>z) return z;
    else return y;
    else
    if (x>z) return z;
    else return x;
    
    }


double min(int x, int y, double z)
//55, 66, 33.3
{
       if (x>y)
       if (y>z) return z;
       else return (double)y;
       else 
       if (x>z) return z;
       else return (double)x;
       }
double min(int x, double y, double z)
//34, 6.0, 7.2
{
       if (x>y)
       if (y>z) return z;
       else return y;
       else 
       if (x>z) return z;
       else return (double)x;
       } 
double min(double x, int y, double z) 
//3.4, 6, 7.2
{
       if (x>y)
       if (y>z) return z;
       else return (double)y;
       else 
       if (x>z) return z;
       else return x;
       }
double min(double x, double y, double z)
//3.4, 6.0, 7.2
{
       if (x>y)
       if (y>z) return z;
       else return y;
       else 
       if (x>z) return z;
       else return x;
       }             
           

int main()

{

   outfile << min(99, 77, 33)   << endl;

   outfile << min(55, 66, 33.3) << endl;

   outfile << min(34, 6.0, 7.2) << endl;

   outfile << min(3.4, 6, 7.2)  << endl;

   outfile << min(3.4, 6.0, 7.2)<< endl;
 
   return 0;

}
/*
ifstream infile("in.dat");

struct record{
       double x;
       double y;
       double z;
};
int main(){
    record rec;
    float min;
if(!infile)
cerr<<"Error:could not open input file\n";
else if(!outfile)
cerr<<"Error:could not open output file\n";
outfile<<setw(9)<<"X"<<setw(10)<<"Y"<<setw(10)<<"Z"<<setw(17)<<"Minimum\n\n";
while(infile >> rec.x >> rec.y >> rec.z){
             outfile<<setiosflags(ios::showpoint | ios::fixed)
             <<setprecision(1)<<setw(10)<<rec.x<<setw(10)<<rec.y<<setw(10)<<rec.z<<setw(12)<<endl;
             }             
return 0;
}
*/

decompiled · 10-05-09

Some sample code for your main and min(). Remember that int's fall within the scope of float & double so you don't need to override your functions. A single function signature will work in this case.

Code:

#include <iostream>
using namespace std;

float m(float a, float b, float c)
{
  float temp = (a < b ? a : b);
  float answer = (temp < c ? temp : c);
  return answer;
}

int main()
{
  cout << m(80,1.9,3.33333) << endl;
  return 0;
}

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Help with Minimum Program in C++

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