search for: c_002b_002b

Hello, I tried to call an external function of R from the following code in C++: void prodgdot(double *x, double *y, int *n, double *output) { int i; *output=0; for (i=0;i<*n;i++) { *output+=x[i]*y[i]; } } I compiled it using from my working directory in linux terminal and I think it's ok: giba at giba-desktop:~/mysrc/meus_testes_iniciais$ R CMD SHLIB

...is given. R-admin suggests adapting the configuration for GCC 6 [2]. I'm using r-base-core in version 3.3.2-1xenial0 from the Ubuntu repo [3]. Please advise. Best regards Kirill [1] https://gcc.gnu.org/gcc-6/changes.html [2] https://cran.r-project.org/doc/manuals/r-release/R-admin.html#C_002b_002b-Support [3] http://stat.ethz.ch/CRAN/bin/linux/ubuntu