https://community.intel.com/t5/Intel-Fortran-Compiler/calling-function/m-p/802715#M38537 haw to call a function without an assigning a returning value? <BR /> <BR />following code works at Compaq: <BR /> <BR />program TestProgram <BR /> <BR /> call testFunction() <BR /> <BR /> contains <BR /> <BR /> integer function testFunction() <BR /> testFunction = 13 <BR /> end function testFunction <BR /> <BR />end program TestProgram <BR /> <BR />but Intel compiller returns the error: <BR />Test.F90(4): Error: The CALL statement is invoking a function subprogram as a subroutine. [TESTFUNCTION] Thu, 07 Sep 2006 20:10:52 GMT buchos 2006-09-07T20:10:52Z https://community.intel.com/t5/Intel-Fortran-Compiler/calling-function/m-p/802715#M38537 haw to call a function without an assigning a returning value? <BR /> <BR />following code works at Compaq: <BR /> <BR />program TestProgram <BR /> <BR /> call testFunction() <BR /> <BR /> contains <BR /> <BR /> integer function testFunction() <BR /> testFunction = 13 <BR /> end function testFunction <BR /> <BR />end program TestProgram <BR /> <BR />but Intel compiller returns the error: <BR />Test.F90(4): Error: The CALL statement is invoking a function subprogram as a subroutine. [TESTFUNCTION] Thu, 07 Sep 2006 20:10:52 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/calling-function/m-p/802715#M38537 buchos 2006-09-07T20:10:52Z https://community.intel.com/t5/Intel-Fortran-Compiler/calling-function/m-p/802716#M38538 You fix the error in your code and reference it as a function. The cases where it was "safe" to CALL a function were too few so we simply disallowed this. Assign the value to a throwaway variable.<BR /> Thu, 07 Sep 2006 20:27:18 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/calling-function/m-p/802716#M38538 Steven_L_Intel1 2006-09-07T20:27:18Z