Почему мой .c-файл не распознает мой заголовочный файл? 2 ошибки, Xcode

Мой заголовочный файл:Почему мой .c-файл не распознает мой заголовочный файл? 2 ошибки, Xcode

#ifndef __FRACTION_H__ 

#define __FRACTION_H__ 

struct fraction{ 
    int wholeNumber; 
    int numerator; 
    int denominator; 
}; 

struct fraction fractionCreate(int numerator, int denominator); 
struct fraction fractionAdd(struct fraction a, struct fraction b); 
struct fraction fractionSubtract(struct fraction a, struct fraction b); 
struct fraction fractionMultiply(struct fraction a, struct fraction b); 
struct fraction fractionDivide(struct fraction a, struct fraction b); 
void fractionPrint(struct fraction f); 

#endif

В 2 ошибки я получаю в моем файле .c являются:

Undefined symbols for architecture x86_64: "_main", referenced from: 
implicit entry/start for main executable 
ld: symbol(s) not found for architecture x86_64 
clang: error: linker command failed with exit code 1 (use -v to see invocation)

мой .c файл

#include <math.h> 
#include <stdio.h> 
#include "fraction.h" 

struct fraction fractionCreate(int numerator, int denominator) 
{ 
    struct fraction result; 
    result.wholeNumber = 0; 
    if (denominator == 0) 
    { 
     result.numerator = 0; 
     result.denominator = 0; 
    } 
    else 
    { 
     if (numerator*denominator <0) 
     { 

      int tempNumerator = fabs(numerator); 
      int tempDenominator = fabs(denominator); 
      int temp = 0; 
      while(tempDenominator != 0) 
      { 
       temp = tempDenominator; 
       tempDenominator = tempNumerator%tempDenominator; 
       tempNumerator = temp; 
      } 
      int GCD = tempNumerator; 

      numerator = fabs(numerator); 
      denominator = fabs(denominator); 
      //Num is larger than denom 
      if(numerator>=denominator) 
      { 
       //whole number 
       if(numerator%denominator == 0) 
       { 
        result.wholeNumber = (numerator/denominator)*-1; 
        result.numerator = 1; 
        result.denominator = 1; 
       } 
       //mixed number 
       else 
       { 
        result.wholeNumber = ((numerator - (numerator%denominator)) /denominator)*-1; 
        numerator = (numerator%denominator); 
        if (numerator%GCD ==0 && denominator%GCD ==0) 
        { 
         result.numerator = numerator/GCD; 
         result.denominator= denominator/GCD; 
        } 
        else 
        { 
         result.numerator = numerator; 
         result.denominator = denominator; 
        } 
       } 
      } 

      //simple fraction 
      else 
      { 
       if (numerator%GCD ==0 && denominator%GCD ==0) 
       { 
        result.numerator = (numerator/GCD)*-1; 
        result.denominator= denominator/GCD; 
       } 
       else 
       { 
        result.numerator = numerator*-1; 
        result.denominator = denominator; 
       } 
      } 
     } 

     else if (numerator*denominator > 0) 
     { 
      int tempNumerator = fabs(numerator); 
      int tempDenominator = fabs(denominator); 
      int temp = 0; 
      while(tempDenominator != 0) 
      { 
       temp = tempDenominator; 
       tempDenominator = tempNumerator%tempDenominator; 
       tempNumerator = temp; 
      } 
      int GCD = tempNumerator; 
      numerator = fabs(numerator); 
      denominator = fabs(denominator); 

      //Num is larger than denom 
      if(numerator>=denominator) 
      { 
       //whole number 
       if(numerator%denominator == 0) 
       { 
        result.wholeNumber = numerator/denominator; 
        result.numerator = 1; 
        result.denominator = 1; 
       } 
       //mixed number 
       else 
       { 
        result.wholeNumber = (numerator - (numerator%denominator)) /denominator; 
        numerator = (numerator%denominator); 
        if (numerator%GCD ==0 && denominator%GCD ==0) 
        { 
         result.numerator = numerator/GCD; 
         result.denominator= denominator/GCD; 
        } 
        else 
        { 
         result.numerator = numerator; 
         result.denominator = denominator; 
        } 
       } 
      } 

      //simple fraction 
      else 
      { 
       if (numerator%GCD ==0 && denominator%GCD ==0) 
       { 
        result.numerator = numerator/GCD; 
        result.denominator= denominator/GCD; 
       } 
       else 
       { 
        result.numerator = numerator; 
        result.denominator = denominator; 
       } 
      } 
     } 
    } 
    return result; 
} 

void fractionPrint(struct fraction f) 
{ 
    if (f.numerator == 0 && f.denominator == 0) 
    { 
     printf("Divide by zero!\n"); 
    } 
    else if(f.numerator ==0 && f.denominator !=0) 
    { 
     printf("0\n"); 
    } 
    else 
    { 
     // There IS a whole number 
     if (f.wholeNumber !=0) 
     { 
      //ONLY whole number 
      if (f.numerator == 1 && f.denominator ==1) 
      { 
       printf("%d\n", f.wholeNumber); 
      } 
      //Mixed number 
      else 
      { 
       printf("%d %d/%d\n", f.wholeNumber, f.numerator, f.denominator); 
      } 
     } 
     //fraction only 
     else 
     { 
      printf("%d/%d\n", f.numerator, f.denominator); 
     } 
    } 

} 




struct fraction fractionAdd(struct fraction a, struct fraction b) 
{ 
    struct fraction result; 

    //If whole number exists 
    if(a.wholeNumber!=0) 
    { 
     if (a.numerator ==1 && a.denominator ==1) 
     { 
      a.numerator =0; 
     } 
    } 
    else if (b.wholeNumber!=0) 
    { 
     if (b.numerator ==1 && b.denominator ==1) 
     { 
      b.numerator =0; 
     } 
    } 
    //If the numerator of a is 1 and denom is 1, then make it 0 
    //If the numerator of b is 1 and deom is 1, then make it 0 

    //Open up the mixed fraction 
    a.numerator = (a.wholeNumber*a.denominator) + a.numerator; 
    b.numerator = (b.wholeNumber*b.denominator) + b.numerator; 

    //If the denominators equal 
    if (a.denominator == b.denominator) 
    { 
     result.numerator = a.numerator + b.numerator; 
     result.denominator = b.denominator; 
     result = fractionCreate(result.numerator, result.denominator); 
     return result; 
    } 
    else if (a.denominator == 0 && b.denominator == 0) 
    { 
    } 
    //If the denominator is not equal, 
    else if (a.denominator != b.denominator) 
    { 
     int LCM; 
     int temp =0; 
     //only use the absolute values when finding the GCD 
     int tempDenominatorA = fabs(a.denominator); 
     int tempDenominatorB = fabs(b.denominator); 

     while(tempDenominatorB!=0) 
     { 
      temp = tempDenominatorB; 
      tempDenominatorB = tempDenominatorA%tempDenominatorB; 
      tempDenominatorA = temp; 
     } 
     int GCD = tempDenominatorA; 
     LCM = fabs(a.denominator*b.denominator)/GCD; 

     //then multiply each denominator and numerator by a number that will make it the LCM 
     int multiplyA, multiplyB; 
     multiplyA = LCM/fabs(a.denominator); 
     multiplyB = LCM/fabs(b.denominator); 
     a.numerator = a.numerator*multiplyA; 
     b.numerator = b.numerator*multiplyB; 

     result.numerator = a.numerator + b.numerator; 
     result.denominator = LCM; 

     result = fractionCreate(result.numerator, result.denominator); 

     return result; 

    } 

    return result; 
} 

struct fraction fractionSubtract(struct fraction a, struct fraction b) 
{ 
    struct fraction result; 

    //If whole number exists 
    if(a.wholeNumber!=0) 
    { 
     if (a.numerator ==1 && a.denominator ==1) 
     { 
      a.numerator =0; 
     } 
    } 
    else if (b.wholeNumber!=0) 
    { 
     if (b.numerator ==1 && b.denominator ==1) 
     { 
      b.numerator =0; 
     } 
    } 
    //If the numerator of a is 1 and denom is 1, then make it 0 
    //If the numerator of b is 1 and deom is 1, then make it 0 

    //Open up the mixed fraction 
    a.numerator = (a.wholeNumber*a.denominator) + a.numerator; 
    b.numerator = (b.wholeNumber*b.denominator) + b.numerator; 
    a.wholeNumber = 0; 
    b.wholeNumber = 0; 

    //If the denominators equal 
    if (a.denominator == b.denominator) 
    { 
     result.numerator = a.numerator - b.numerator; 
     result.denominator = b.denominator; 
     result = fractionCreate(result.numerator, result.denominator); 
     return result; 
    } 
    else if (a.denominator == 0 && b.denominator == 0) 
    { 
    } 
    //If the denominator is not equal, 
    else if (a.denominator != b.denominator) 
    { 
     int LCM; 
     int temp =0; 
     //only use the absolute values when finding the GCD 
     int tempDenominatorA = fabs(a.denominator); 
     int tempDenominatorB = fabs(b.denominator); 

     while(tempDenominatorB!=0) 
     { 
      temp = tempDenominatorB; 
      tempDenominatorB = tempDenominatorA%tempDenominatorB; 
      tempDenominatorA = temp; 
     } 
     int GCD = tempDenominatorA; 
     LCM = fabs(a.denominator*b.denominator)/GCD; 

     //then multiply each denominator and numerator by a number that will make it the LCM 
     int multiplyA, multiplyB; 
     multiplyA = LCM/fabs(a.denominator); 
     multiplyB = LCM/fabs(b.denominator); 
     a.numerator = a.numerator*multiplyA; 
     b.numerator = b.numerator*multiplyB; 

     result.numerator = a.numerator - b.numerator; 
     result.denominator = LCM; 

     result = fractionCreate(result.numerator, result.denominator); 

     return result; 

    } 

    return result; 
} 

struct fraction fractionMultiply(struct fraction a, struct fraction b) 
{ 
    struct fraction result; 
    //If whole number exists 
    if(a.wholeNumber!=0) 
    { 
     if (a.numerator ==1 && a.denominator ==1) 
     { 
      a.numerator =0; 
     } 
    } 
    else if (b.wholeNumber!=0) 
    { 
     if (b.numerator ==1 && b.denominator ==1) 
     { 
      b.numerator =0; 
     } 
    } 
    //If the numerator of a is 1 and denom is 1, then make it 0 
    //If the numerator of b is 1 and deom is 1, then make it 0 

    //Open up the mixed fraction 
    a.numerator = (a.wholeNumber*a.denominator) + a.numerator; 
    b.numerator = (b.wholeNumber*b.denominator) + b.numerator; 

    a.wholeNumber = 0; 
    b.wholeNumber = 0; 

    result.numerator = a.numerator*b.numerator; 
    result.denominator = a.denominator*b.denominator; 

    result = fractionCreate(result.numerator, result.denominator); 

    return result; 
} 

struct fraction fractionDivide(struct fraction a, struct fraction b) 
{ 
    struct fraction result; 
    //If whole number exists 
    if(a.wholeNumber!=0) 
    { 
     if (a.numerator ==1 && a.denominator ==1) 
     { 
      a.numerator =0; 
     } 
    } 
    else if (b.wholeNumber!=0) 
    { 
     if (b.numerator ==1 && b.denominator ==1) 
     { 
      b.numerator =0; 
     } 
    } 
    //If the numerator of a is 1 and denom is 1, then make it 0 
    //If the numerator of b is 1 and deom is 1, then make it 0 

    //Open up the mixed fraction 
    a.numerator = (a.wholeNumber*a.denominator) + a.numerator; 
    b.numerator = (b.wholeNumber*b.denominator) + b.numerator; 

    a.wholeNumber = 0; 
    b.wholeNumber = 0; 

    result.numerator = a.numerator*b.denominator; 
    result.denominator = a.denominator*b.numerator; 

    result = fractionCreate(result.numerator, result.denominator); 

    return result; 
}

источник

2014-10-29 helloTHERE

где ваш 'main()'? –

Это для присвоения класса, поэтому онлайн-программа, которая проверяет наш код, добавит главное в – helloTHERE

uh ho !! ** назначение класса **. почему я не видел этого? –

вас. c отсутствует файл main()

gcc или любой другой компилятор c ищет сначала ma в() в программе (файл .c)

это, мне кажется, что вам не хватает основной() в файле .c

попробуйте добавить основной() в файле .c и вызвать другие функции внутри основной функции в том порядке, в котором вы хотите

источник

2014-10-29 09:03:13

Почему мой .c-файл не распознает мой заголовочный файл? 2 ошибки, Xcode

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