Compilare: main.cpp: In function 'int main()': main.cpp:15:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(f);i++){ ~^~~~~~~~~~ main.cpp:17:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(!strchr(" ,",f[i])&&(i==strlen(f)-1||strchr(" ,",f[i+1]))){ ~^~~~~~~~~~~~~ main.cpp:10:23: warning: unused variable 'p' [-Wunused-variable] int nrf=0,nrcuv,i,p,j=0,ic; ^ main.cpp:10:25: warning: unused variable 'j' [-Wunused-variable] int nrf=0,nrcuv,i,p,j=0,ic; ^ main.cpp:10:29: warning: variable 'ic' set but not used [-Wunused-but-set-variable] int nrf=0,nrcuv,i,p,j=0,ic; ^~