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Error while compiling. Need some help

waxiz (6)
While compiling my code i get the error message stated below. It seems to be a problem with my reference to the function "plotta_histogram", but i can't find it. Would be glad for some help.

Compiling: **/**/*.cpp
Linking console executable: **/**/*
Undefined symbols for architecture x86_64:
"plotta_histogram(double*)", referenced from:
_main in *.o
ld: symbol(s) not found for architecture x86_64
collect2: ld returned 1 exit status
Process terminated with status 1 (0 minutes, 0 seconds)
0 errors, 0 warnings


Code:


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#include <string>
#include <cctype>
#include <iostream>
#include <fstream>
#include <cmath>
#include <iomanip>
using namespace std;

const int ANTAL_BOKSTAVER = 26;  //A-Z

void berakna_histogram_abs(string &rad, int frekvens[], double &antal);

void abs_till_rel(double rel_frekvens[], int frekvens[], double &antal);

void plotta_histogram (double rel_frekvens[]);

int main()
{
string rad;
int frekvens[ANTAL_BOKSTAVER];
double antal;
double rel_frekvens[ANTAL_BOKSTAVER];


cout << "Ge en rad med text:" << endl;
getline(cin,rad);



berakna_histogram_abs(rad, frekvens, antal);

abs_till_rel(rel_frekvens, frekvens, antal);

plotta_histogram(rel_frekvens);

  return 0;
}


void berakna_histogram_abs(string &rad, int frekvens[], double &antal)
{
    for (int i=0; i<ANTAL_BOKSTAVER; i++)
    frekvens[i] = 0;
  for (int i=0; i< (int) rad.length(); i++)
    {
      int index;
      if (rad.at(i)>='a' && rad.at(i)<='z')
	{
	    index = rad.at(i) - 'a'; frekvens[index]++;
        antal++;
	}

      if (rad.at(i)>='A' && rad.at(i)<='Z')
	{
	    index = rad.at(i) - 'A'; frekvens[index]++;
	    antal++;
	    }
    }

}

void abs_till_rel(double rel_frekvens[], int frekvens[], double &antal)
{
    for (int i=0; i<ANTAL_BOKSTAVER; i++)
        rel_frekvens[i] = frekvens[i]/antal*100;

}

void plotta_histogram_rel (double rel_frekvens[])
{
char bokstav;
string asterisk="*";
string plott;
bokstav='A';

    for (int i=0; i<ANTAL_BOKSTAVER; i++)
{
        for (int j=0; j<rel_frekvens[i]; j++)
        {
            plott.append(asterisk);
        }
      cout << bokstav << setw(8) << plott << endl;
}



    }

vlad from moscow (6539)
The linker can not find the definition of
void plotta_histogram (double rel_frekvens[]);

I think you made a typo and named this function in its definition as

void plotta_histogram_rel (double rel_frekvens[])
Last edited on
andywestken (4087)
;-)

You've declared (no _rel)

void plotta_histogram (double rel_frekvens[])

but defined (with _rel)

void plotta_histogram_rel (double rel_frekvens[])
waxiz (6)
Oh so stupid i feel right now :P
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