Declaration

int main(void);
/* OR */
int main(int argc, char **argv);
/* OR */
/* Some equivalent (typedef'd) or implementation-defined flavor. */

argc shall be non-negative and argv[argc]==NULL. If argc is positive, argv[0] shall be some representation of the program name (which may or may not be any actual use) and argv[1] to argv[argc-1] shall be the program parameters. If the host-environment does not provide upper- and lowercase, strings shall be lowercase.

References

• The C Standard, 5.1.2.2.1 (N1124 numbering)