Hello! I’m programming in Fortran 90 using Force, version 3.0.0. beta2 compiler. The program calls an executable external file with the instruction call system (‘name of file’). This executable file calculates the estimation variance of a set of data and automatically generates an output txt file. Then, the program opens the txt file to read the values generated. But, when the program reads the txt file, sometimes the file is still incomplete and some values assume the value of -999 because when the file is open these values aren’t completely generated.

Is there any instruction that allows the code to proceed only when the executable file is finished? I searched the tutorials and found an instruction called runqq with the sintax:
RUNQQ (filename, commandline)

I’ve tryed to run this command on the compiler but the program doesn’t recognize this instruction. Is it because of the compiler I’m using? Can anyone help me?

Thanks

André