read some book on C C program must have main() function to run. With this statement
Code:
main;
you define a symbol with name "main". Both link and compiler require this symbol and you defined it. That's why compilation and linkage works. But when you start the compiled program it tries to call the function with the name "main". It finds the symbol main in the symbol table and makes jump to the symbol definition. But because you didn't define the symbol as function it is unpredictable what is now held in the memory under the symbol main. Hopefully nulls. As result you receive core dumped, because kernel can't execute nulls or finds no instruction to execute.
When you write "unix" instead of "main", you didn't define "main" symbol and the program can't be compiled without main.
i just finished a project for a c++ class that i wrote at home on my computer, compiled with gcc. when i brought the code into school it would not compile, it would complain that cannot call main() function. at school we use ancient borland c++ from 1995. anyway my program has 20 different... (3 Replies)
Hi,
I have a main loop which calls a sub loop, which finally returns to the main loop itself. The main loop runs when a flag is set. Now, I have a signal handler for SIGINT, which resets the flag and thus stops the main loop. Suppose I send SIGINT while the program is in subloop, I get an error... (1 Reply)
Hi! I've a C program as shown below..
The line numbers and the statements of the program are separated by a space..
1 #include<stdio.h>
2 char a,b,c;
3 float x,y,z;
4 int main()
5 {
6 int d,e,f;
7 // further declarations
8 // further declarations
9 /* body*/
10 }
11 void fun1()
12... (1 Reply)
why does this not work?
#include <stdio.h>
#include <stdlib.h>
char getFileMode(char charChanger) {
char filetype; /*var to hold the value to be returned*/
filetype = charSetter; /*set filetype to "l" if it is a symlink*/
return filetype;
}
int main(void){
char... (8 Replies)
Hi friends,
when I am passing arguments to main, I want another function to be able to have access to that function, the problem is that I am creating athread, which has a function like void *xyz(void *), how can pass the refernce of argv to this function, if you see my program, you will better... (2 Replies)
H friends,
As we know, a function returns a value and that value is saved somwhere. like
int Sum( int x, int y )
{
return x + y;
}
Total = Sum( 10, 20 );
The value 30 is saved in variable Total.
Now the question is, what int value does the function main return, and where is it... (5 Replies)
Hello All,
I am trying to call a function from the calling main program from a dlopened library function, below is the entire code, when I execute it it crashes with sigill. Can you guys help me out I guess I am missing out on the linker flag or something here. besides I am new to AIX and... (1 Reply)
I feel that i am missing something obvious but i can't find what is wrong.
I have a script that is launching some functions with "&" and each call is feeding the array with a value. When all calls are finished I just want to retrieve the values of that array.
It is looking like that :
... (5 Replies)
Hi. I have some code, that for some reason, I could not post it here in this post. Here's the address for it:
#if 0 shc Version 4.0.1, Generic Shell Script Compiler GNU GPL Version 3 Md - Pastebin.com
First off, I used "shc" to convert the code from shell script to C.
And The... (6 Replies)
Discussion started by: ignatius
6 Replies
LEARN ABOUT DEBIAN
wibble-test-genrunner
wibble-test-genrunner(1) General Commands Manual wibble-test-genrunner(1)NAME
wibble-test-genrunner - Code generator for wibble testsuites.
SYNOPSIS
wibble-test-genrunner header <file>
wibble-test-genrunner main <files>
DESCRIPTION
The program generates .cpp files that are then compiled and linked into a test program for running tests from .test.h files. Examples of
such .test.h files may be found among wibble headers, eg. /usr/include/wibble/regexp.test.h.
In the first form, the program processes a single header file (usually of the form foo.test.h) and produces a corresponding .cpp file to be
compiled. In the second form, it takes as <files> all the .test.h headers and produces a single main.cpp which contains the main() function
of the test program, which then runs all the tests in all the .test.h files. The generated source code is always written to standard output
and it is left up to the user to redirect it to a meaningful location.
The program currently has no options other than the two forms above. The program is intended to be run as part of build process of programs
or libraries using the wibble testing framework. For convenient use from CMake, there is a test.cmake script under /usr/share/wibble, that
takes care of producing all the .cpp files (both per-header and the main one), compiling them and linking them into a single binary which
executes the testsuite.
AUTHOR
Petr Rockai <me@mornfall.net>
wibble-test-genrunner(1)
08-03-2015
C program must have main() function to run. With this statement