I wrote a program that compiles and runs an external program(prog1.c). And I want to get the output of the prog1.c somehow.
for example if prog1.c is printf("HELLO"); and prints HELLO to the terminal, I want this output to get to a variable in my program or a file.
I saw somewhere something about pipe, but I dont know this command much and dont know if this is the right way.
Anyone can help me, direct me or show me an example?
Thank you!
Using freopen you can redirect your printf output to file.
freopen("c:\\output\\output.txt","w",stdout);
printf("write in file using printf"); //this will be printed to file, not to console
If you want to understand more you can see my video tutorial on this.
In this example I have not used pipe, but redirected standard output to file rather than console.
you can also use pipe (and fork) to redirect outpout from prog1 to your input in the other prog, and check waitpid to catch return value too
