macOS Mac terminal

[phil05]

I have compiled a C++ program in the terminal and i want to output the results to a text file (results.txt) instead of the terminal.
What command do i use to do this?

Thanks

 

[toddburch]

I have compiled a C++ program in the terminal and i want to output the results to a text file (results.txt) instead of the terminal.
What command do i use to do this?

Thanks

Run your program and redirect it's output to a file. If you program is "hello", type

./hello > results.txt

 

[MacRumors Guy]

./your_program_name > file.txt

or >> if you want to append to the file.

 

[phil05]

Thanks for the help guys.

 

[foidulus]

You can also pipe it to tee if you want to see the results on screen and store it in a file:

./your_program | tee output_file_name.txt

 

[toddburch]

Cool - I wasn't aware of tee.

Too many goodies in unix to learn them in one sitting.

 

[bookshadow]

Doing it in code

Why don't you do it in the code of your program?


#include <stdio.h>
#include <stdlib.h>

// create a file pointer and the string to print to the file
FILE *fp;
char buffer[] = "This is my result string";

// open the file and exit() from stdlib.h if it does not exist
fp = fopen("results.txt","w");
if (fp == NULL) exit(1);

// print the string to the file
fprintf(fp,"result: %s", buffer);

// close the file to save the changes
fclose(fp);

return 0;