Compilare: main.cpp: In function 'int main()': main.cpp:7:11: warning: unused variable 'facto' [-Wunused-variable] int x,facto=1,c=0,i,j; ^~~~~ main.cpp:7:25: warning: unused variable 'j' [-Wunused-variable] int x,facto=1,c=0,i,j; ^ main.cpp:8:10: warning: unused variable 'gasit' [-Wunused-variable] bool gasit=false; ^~~~~ main.cpp:9:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%i",&x); ^