c 2b 2b argv

1// command line arguments in c++ are stored in an array of c-strings
2// # of arguments: argc
3// actual arguments: argv
4
5#include <iostream>
6using namespace std;
7
8int main(int argc, char** argv){
9  for(int i = 0; i < argc; i++){
10    cout << "argv" << i << ": " << argv[i] << endl;
11  }
12  return 0;
13}
14
15/*
16
17./main.exe hello world
18
19argv0: main.exe
20argv1: hello
21argv2: world
22
23*/
24    

1// Use command lines
2
3int main(int argc, char *argv[])
4{
5
6	for(int i = 1; i < argc; i++){
7		if(!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help") ){
8			printf("Usage: App <options>\nOptions are:\n");
9			printf("Option list goes here");
10			exit(0);
11		}else if(!strcmp(argv[i], "-c") || !strcmp(argv[i], "--custom")){
12			printf("argument accepted");
13		}else{
14			if(i == argc-1){
15				break;
16			}
17			MessageBox(NULL, TEXT("ERROR: Invalid Command Line Option Found: \"%s\".\n", argv[i]), TEXT("Error"), MB_ICONERROR | MB_OK);
18		}
19	}
20
21	MessageBox(NULL, TEXT("ERROR: No Command Line Option Found. Type in --hep or -h"), TEXT("Error"), MB_ICONERROR | MB_OK);
22}