So far, we have seen that no arguments were passed in the main function. But the C programming language gives the programmer the provision to add parameters or arguments inside the main function to reduce the length of the code. These arguments are called command line arguments in C.<\/p>\n
In this tutorial, we will discuss:<\/p>\n
Command line arguments are nothing but simply arguments that are specified after the name of the program in the system’s command line, and these argument values are passed on to your program during program execution.<\/p>\n
In order to implement command line arguments, generally, 2 parameters are passed into the main function:<\/p>\n
The basic syntax is:<\/p>\n
int main( int argc, char *argv[] )\r\n{\r\n.\r\n.\r\n\/\/ BODY OF THE MAIN FUNCTION\r\n.\r\n.\r\n}<\/pre>\nAnother way to implement command line arguments is:<\/p>\n
int main( int argc, char **argv[] )\r\n{\r\n.\r\n.\r\n\/\/ BODY OF THE MAIN FUNCTION\r\n.\r\n.\r\n}<\/pre>\nNow, let us discuss the components of this code in detail:<\/p>\n
Here is a code in C that illustrates the use of command line arguments.<\/strong><\/p>\n If you’re still having any doubts related to the above syntax then don’t forget to check this<\/p>\n\/\/ The program name is cl.c\r\n#include<stdio.h>\r\nint main(int argc, char** argv)\r\n{\r\n\r\nprintf(\"Welcome to DataFlair tutorials!\\n\\n\");\r\n\r\nint i;\r\nprintf(\"The number of arguments are: %d\\n\",argc);\r\nprintf(\"The arguments are:\");\r\n\r\nfor ( i = 0; i < argc; i++)\r\n{\r\nprintf(\"%s\\n\", argv[i]);\r\n}\r\nreturn 0;\r\n}\r\n\r\n<\/pre>\nQuiz on Command Line Arguments in C<\/h3>\n