Fortran & C 混编

C 调用 Fortran
c2ffn.f
      SUBROUTINE NAMEAGE(NAME, NLEN, AGE, TEMP)
      CHARACTER*(*) NAME
      INTEGER NLEN,AGE
      REAL TEMP
C
      WRITE(6,1000) NAME(1:NLEN),AGE,TEMP
 1000 FORMAT(1X,'Hello ',A,', who is ',I2,
     .       ' years old, has a temperature of ', f4.1)
      RETURN
      END
c2f.c
#include <string.h>
#ifdef _CRAY
# include <fortran.h>
#  define nameage       NAMEAGE
#else
#  if !defined(_AIX) && !defined(__hpux)
#    define nameage     nameage_
#  endif
#  define _fcd          char *
#  define _cptofcd(a, b)   (a)
#  define _fcdlen(a)    strlen(a)
#endif
void nameage(_fcd name, int *nlen, int *age, float *temp);
int main()
{
    char *name = "Knut";
    _fcd fp;
    int nlen, age = 4;
    float temp = 98.6;
    nlen = strlen(name);
    fp = _cptofcd(name, nlen);
    nameage(fp, &nlen, &age, &temp);
    system("pause");
    return 0;
}
Makefile
f77 = g77
 
#
tar = demo
 
#
src = c2f.c
 
#
srcf = c2ffn.f  
 
#
obj = $(src:.c=.o)
 
objf = $(srcf:.f=.o)
 
 
${tar} : ${obj} ${objf}
    ${f77} -o ${tar}  ${objf} ${obj} 
 
${obj} : ${src}
    ${CC} -c ${src} -o ${obj}
 
${objf} : ${srcf}
    ${f77} -c ${srcf} -o ${objf}
clean:
    rm -f  *.o
Fortran 调用 C
#include <string.h>
#ifdef _CRA