https://community.intel.com/t5/Software-Archive/mixed-F-C/m-p/973422#M24550 Hello! <BR /> <BR />Can I call a Fortran subroutine from a C function, which is called by a Fortran Main program? <BR /> <BR />To make it clearer: <BR />I have 3 programs: <BR />1) Main program coded in FORTRAN: F_main <BR />2) a void function in C: c_sub1 <BR />3) a subroutine in FORTRAN: f_sub2 <BR /> <BR />in F_main, c_sub1 is called; <BR />in c_sub1, f_sub2 is called. <BR /> <BR />I was able to call c_sub1 when f_sub2 was not declared and used in c_sub1. When I added the relative info into c_sub1 about f_sub2. The F_main couldn't find c_sub1. <BR /> <BR />Your help is highly appreciated! <BR /> <BR />Jenny Tue, 13 Nov 2001 06:45:20 GMT Intel_C_Intel 2001-11-13T06:45:20Z https://community.intel.com/t5/Software-Archive/mixed-F-C/m-p/973422#M24550 Hello! <BR /> <BR />Can I call a Fortran subroutine from a C function, which is called by a Fortran Main program? <BR /> <BR />To make it clearer: <BR />I have 3 programs: <BR />1) Main program coded in FORTRAN: F_main <BR />2) a void function in C: c_sub1 <BR />3) a subroutine in FORTRAN: f_sub2 <BR /> <BR />in F_main, c_sub1 is called; <BR />in c_sub1, f_sub2 is called. <BR /> <BR />I was able to call c_sub1 when f_sub2 was not declared and used in c_sub1. When I added the relative info into c_sub1 about f_sub2. The F_main couldn't find c_sub1. <BR /> <BR />Your help is highly appreciated! <BR /> <BR />Jenny Tue, 13 Nov 2001 06:45:20 GMT https://community.intel.com/t5/Software-Archive/mixed-F-C/m-p/973422#M24550 Intel_C_Intel 2001-11-13T06:45:20Z