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How to fix “undefined symbols for architecture x86_64” message?

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I am writing a program using C, which, given two points, and a value x in between them, a function "Interp" will interpolate a corresponding value for y. I am receiving a message that says "undefined symbols for architecture", and I'm not sure how to fix it. Any help would be appreciated.

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

double Interp(double x_1, double y_1, double x_2, double y_2, double x) 
double k,y,b;
k = (y_2-y_1)/(x_2-x_1);
b = y_2-(k*x_2)
y = k*x+b;
return(y);

The result is a message saying "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"

I don't know what this means so any guidance would be very helpful!

c

share|improve this question

asked Mar 26 at 3:24

jclayjclay

1

• 
  
  
  

  
  6
  

  
  
  
  
  
  

  
  
  Your program needs a main function.
  
  – paddy
  Mar 26 at 3:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of Compiling a .C file: Undefined symbols for architecture x86_64
  
  – grek40
  Mar 26 at 7:09
  

  
  
  
  

add a comment | 

0

I am writing a program using C, which, given two points, and a value x in between them, a function "Interp" will interpolate a corresponding value for y. I am receiving a message that says "undefined symbols for architecture", and I'm not sure how to fix it. Any help would be appreciated.

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

double Interp(double x_1, double y_1, double x_2, double y_2, double x) 
double k,y,b;
k = (y_2-y_1)/(x_2-x_1);
b = y_2-(k*x_2)
y = k*x+b;
return(y);

The result is a message saying "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"

I don't know what this means so any guidance would be very helpful!

c

share|improve this question

asked Mar 26 at 3:24

jclayjclay

1

• 
  
  
  

  
  6
  

  
  
  
  
  
  

  
  
  Your program needs a main function.
  
  – paddy
  Mar 26 at 3:30
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Possible duplicate of Compiling a .C file: Undefined symbols for architecture x86_64
  
  – grek40
  Mar 26 at 7:09
  

  
  
  
  

add a comment | 

I am writing a program using C, which, given two points, and a value x in between them, a function "Interp" will interpolate a corresponding value for y. I am receiving a message that says "undefined symbols for architecture", and I'm not sure how to fix it. Any help would be appreciated.

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

double Interp(double x_1, double y_1, double x_2, double y_2, double x) 
double k,y,b;
k = (y_2-y_1)/(x_2-x_1);
b = y_2-(k*x_2)
y = k*x+b;
return(y);

The result is a message saying "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"

I don't know what this means so any guidance would be very helpful!

c

share|improve this question

asked Mar 26 at 3:24

jclayjclay

1

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

double Interp(double x_1, double y_1, double x_2, double y_2, double x) 
double k,y,b;
k = (y_2-y_1)/(x_2-x_1);
b = y_2-(k*x_2)
y = k*x+b;
return(y);

share|improve this question

asked Mar 26 at 3:24

jclayjclay

1

share|improve this question

asked Mar 26 at 3:24

jclayjclay

1

asked Mar 26 at 3:24

jclayjclay

1

asked Mar 26 at 3:24

jclayjclay

1