HomeProgramProgramming C

System () function in C

The int system (const char * command) function passes the command name or program name specified by the command to the host environment to be executed by the Command processor and returned after the command is completed.

Declare the system () function in C

Below is the declaration for system () in C:

 int system ( const char * command )

Parameters

command : This is the string containing the command name.

Returns the value

The value is returned to -1 if there is an error, and if successful, returns the state of the command.

For example

The following C program illustrates how to use the system () function to list all files and directories in the current directory on a Windows device:

 #include #include #include int main () { char command [ 50 ]; strcpy ( command , "dir" ); system ( command ); return ( 0 ); }

Compile the C program in the Window environment to see the result.

According to Tutorialspoint

Previous article: Function getenv () in C

Next lesson: Function bsearch () in C

4 ★ | 1 Vote
parameters in Cvalue of Cpointer in Celements in C

You should read it

May be interested

  • The ord () function in PythonThe ord () function in Python
    the built-in ord () function in python returns an integer representing the unicode code of the specified character.
  • RIGHT function in SQL ServerRIGHT function in SQL Server
    the article will explore and guide you how to use the right function in sql server to extract some characters from the right side of a given string.
  • Int () function in PythonInt () function in Python
    the int () function in python returns an integer object from any number or string.
  • AVG function in SQL ServerAVG function in SQL Server
    the avg function in sql server returns the average value of an expression or average value according to the specified column of the selected row.
  • Hex () function in PythonHex () function in Python
    the hex () function is one of python's built-in functions, used to convert an integer into the corresponding hexadecimal form.
  • ABS function in SQL ServerABS function in SQL Server
    this article will show you in detail how to use the abs () handling function in sql server with specific syntax and examples to better visualize and capture functions.
  • The function id () in PythonThe function id () in Python
    the built-in function id () in python returns a single integer value that identifies an object.
  • DATEPART function in SQL ServerDATEPART function in SQL Server
    the datepart function in sql server returns a time value of the input argument, which can be day, month, year, quarter, hour, minute, second, millisecond ... the return value is an integer type (int)
  • How to use the SUM function to calculate totals in ExcelHow to use the SUM function to calculate totals in Excel
    sum is a popular and very useful excel function, and is also a basic arithmetic function. as its name suggests, the sum function is used to calculate totals in excel. and the parameters can be single parameters or ranges of cells. in this article, tipsmake.com will guide you to use the sum function to calculate the sum in excel, the common errors when calculating sum by sum and how to fix it.
  • LEN function in SQL ServerLEN function in SQL Server
    the len function in sql server returns the length of the specified string. it is important that the len function does not include whitespace characters at the end of the string when calculating length.

Programming C