Xcode C++ Error "linker command failed with exit code 1"

Question

I am a beginning programming student.

Here I have written a simple "sum of two numbers" program in Xcode using C++.

//preprocessor directive
#include <stdio.h>

//local declarations

int main (void)
{
//declare variables
int n1, n2, sum;

//input prompts
printf("This program finds the sum of two numbers. Enter your first number.\n");
scanf("%d" , &n1);

printf("Enter another number.\n");
scanf("%d" , &n2);

//process
sum=n1+n2;

//output
printf("The sum is %d." , sum);

return 0;

}

As far as I can tell, my syntax is accurate, however, when I try to build the program, I get this error code:

"Apple Mach-O Linker (Id) Error. Linker command failed with exit code 1 (use -v to see invocation)"

I have been unable to solve this by reading other Q's and A's.

Any proposed solution? It would be greatly appreciated!!

That can't be the only error, there must be more before it.

molbdnilo
– molbdnilo

2014-01-24 16:16:25 +00:00
Commented Jan 24, 2014 at 16:16 — molbdnilo
– molbdnilo, Commented Jan 24, 2014 at 16:16

kenorb · Accepted Answer · 2017-07-19 13:52:12Z

1

Your error is incomplete. You need to use -v to see invocation (as suggested) or you need to check your log for more details as the error 'Linker command failed with exit code 1' is usually followed by the more detailed error.

So to find more details, in Xcode click on the error under Buildtime and choose Reveal in log. This should give you extra hint. Without any specific error, it's difficult to know what's the problem.

answered Jul 19, 2017 at 13:52

kenorb

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Comments

Wojtek Surowka · Accepted Answer · 2014-01-24 16:06:43Z

0

This error is normally displayed if you have other errors in your source code. If you copy pasted the code directly, there is an x before the opening brace in main.

answered Jan 24, 2014 at 16:06

Wojtek Surowka

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3 Comments

the5string Over a year ago

okay. thanks. the "x" before opening brace was just a copying error, not in the code I tried to compile.

Wojtek Surowka Over a year ago

Then there must be some other error - what is showed in Issue Navigator?

the5string Over a year ago

The Issue Navigator says "one issue." - "Apple Mach-O Linker (Id) Error - Linker command failed with exit code 1 (use -v to see invocation)"

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