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How to start a program using another program?

11
Well...
So, i have a program. A normal program, which does something, and so..
and i have another program, which wants to run the first program....
So, there are 2 questions about that problem ->
1) How can i run the program using another program? Is there anything like runProgram(Directory,Name.exe)?
2) Programs usually returns the 0 value when they end. So, can i, for example, put something like
Expand|Select|Wrap|Line Numbers
  1. int main(){
  2. int something;
  3. //do something to the variable something
  4. return something;
and get the value using another program?
Jan 25 '07 #1
1 1767
horace1
1,510 Expert 1GB
you can use the system() function in C and C++, e.g.
Expand|Select|Wrap|Line Numbers
  1. #include <stdio.h>
  2. #include <process.h>
  3.  
  4. int main(void)
  5. {
  6.     system("dir *.c");                                         /* call system */
  7.     printf("parent program resumed");
  8.     return 0;
  9. }
  10.  
the parent process is suspended, the child process runs, when child stops parent resumes

If you want to run concurently use spawnl()
Jan 25 '07 #2

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