argvargc
argvargc refers to the two parameters passed to the main function in C and C++ programs that expose the program’s command-line arguments at runtime. argc is an int counting how many command-line arguments were provided, and argv is an array of pointers to strings (char* or char**). The array has argc elements plus a terminating NULL, and argv[0] is the program name or path as invoked by the host environment.
Typical main signatures include int main(int argc, char* argv[]) or int main(void) in C, and int main(int
Usage involves inspecting argc to determine how many arguments were supplied and referring to argv[i] for each
Portability and conventions vary by platform, but the general concept is ubiquitous in command-line interfaces. On
Common pitfalls include accessing argv beyond argc, assuming specific argument formats, and neglecting input validation or
See also command-line interface, getopt, argument vector, argument count.