Main function parameter ARGC,ARGV description

The main function in C + + language, often with parameter argc,argv, is as follows:

int main (int argc, char** argv)

int main (int argc, char* argv[])

The effect of these two parameters: ARGC is the number of command line input parameters (separated by whitespace ) argv stores all command-line arguments if your program is hello.exe, if you run the program at the command line, you should first enter the command line with the CD command The directory where the Hello.exe file is located) runs the command:

Hello.exe Shiqi Yu

So, the value of ARGC is 3,argv[0] is "hello.exe", Argv[1] is "Shiqi", argv[2] is "Yu".

See http://wiki.opencv.org.cn/index.php/Main function parameter argc,argv description

Main function parameter ARGC,ARGV description