Compilare: main.cpp: In function 'int main()': main.cpp:25:19: warning: unused variable 'x' [-Wunused-variable] int k=n/2,x=nr; ^ main.cpp:145:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=2; i*i<=(n*n*n); i++) ^~~ main.cpp:147:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' P=1; ^ main.cpp:152:17: warning: unused variable 'k' [-Wunused-variable] int k=n/2; ^ main.cpp:144:33: warning: unused variable 'nrr' [-Wunused-variable] int f1=0,f2=0,f3=0,f4=0,nrr=0,l,P; ^~~