fortran.cat

Potential errors can come up when using allocatable arrays when returned in functions. Given the example found below, an error is created on purpose to demonstrate the compiled cannot detect it. Output: [mypc]$ gfortran allocarr.f90 && ./a.outvalues= -1 25 25 0 -1 -1 Bear in mind, potential errors could come from allocatable output arrays. Valgrind…

Fortran namelist is a I/O method introduced in Fortran 77. It later became a standard in Fortran 90. It basically allows to read/write data as a dictionary like in plain text files. In order to read a REAL array, see the example below: Input param.nml: &param nrows=3, ncol=2, data_file=”hello.txt”, values=1.1, 2.2, 3.3, 4.4/ Output: mymachine:~/tests/namelist_arrays$…

WHERE statement can limit the ability to debug the code: see stack overflow. As mentioned in the thread, it could be converted into DO-ELSE-IF loop. However, It might not that charming if the array have several dimensions. As it implies to deal with multiple loops: nesting,… See below for alternatives: Run the example on www.onecompiler.com…