5
How can I capture the path of the executable in C and place it inside a string?
2 answers
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If you want the path and not just the name, it does not have a universal standard form. You will have to consult the operating system and each has its own way. Since you have not been informed, I will indicate the two main:
Linux:
readlink("/proc/self/exe", buf, bufsize)
Windows
GetModuleFileName(NULL, buf, bufsize)
The argv[0] provides only ./nome, most of the time, it may even provide the way if it is called from other specific places, but it cannot be trusted that it will be called from the proper place to provide the expected response. In addition, the code in which this information is needed may not have access to this variable (it is outside the main() and has not been pushed ahead in any way). So it only works in very specific situations.
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The main() function, where the program starts running, has the following prototype:
int main (int argc, char *argv[])
The argv[0] string contains the name of the executable, the other strings of the matrix have the other parameters passed in the command line. The value of argc corresponds to the length of argv and generally should not be less than 1, because argv[0] always exists.
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It’s Linux or Windows?
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