C Program Compile Problem

[indylarry]

I am new to C programming. I am working on some examples out of a book and I am having problems with this code.


#include <stdio.h>

int main()
{
int integer1, integer2, sum;

printf( "Enter first integer\n" );
scanf( "%d", &integer1 );
printf( "Enter second integer\n" );
scanf( "%d", &integer2 );
sum = integer1 + integer2;
printf( "Sum is %d\n", sum );

return 0;
}

I used this command to compile:


cc -g FIG02_05.C -o fig02_05.C

I am getting this output:


/tmp/ccQBJaAM.o:(.eh_frame+0x11): undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status

What am I doing wrong?

I am sure someone can help me with this and I appreciate the assistance.

[Wybiral]

Why don't you use "gcc FIG02_05.C -o Test"

I just compiled it... No problems.

I'm not entirely sure what "__gxx_personality_v0" but I've seen that from trying to compile C++ code in a C program... I have no idea why that program would cause it... And it didn't for me. Perhaps compiling a C program to a ".C" file isn't the best idea...

[indylarry]

Thanks

These are from the "C How To Program" CD.

I tried it again without the ".c" and still got the same output. Then, I copied "FIG02_05.C" to "0205.c" and it worked like a charm. I had problems with other files and I changed their names using the same convention as above and they now work as well.

Does GCC not like capitalized file names?

[Mirrorball]

An uppercase C is an extension for C++ files, that must have caused your error.

[indylarry]

You're right Mirrorball. I uncapitalized the "C" and they work fine. <sarcasm>Now all I have to do is rename every example file to make them work<sarcasm>.

[Grey]

Try using gcc rather than cc. It should compile as C rather than detecting by extension.

[indylarry]

That didn't work. I got the same output as I did earlier. Once I uncapitalized the "C" it worked. It did work fine when I used g++.

[runningwithscissors]

You're right Mirrorball. I uncapitalized the "C" and they work fine. <sarcasm>Now all I have to do is rename every example file to make them work<sarcasm>.

Change to the directory where your c files are and run this at the bash prompt:

$ for i in ./*; do mv ${i} ${i/.C/.c}; done;

Problem solved!

[Note360]

Try this.



gcc -x c 0205.C -o 0205.o


-x sets the language to c so that it doesnt read by file extesion.