Compilare: main.cpp: In function 'void precalc()': main.cpp:29:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=2;i<=50000;i++) ^~~ main.cpp:33:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' euler[1][1] = 0; ^~~~~ main.cpp: In function 'int32_t main()': main.cpp:69:9: warning: unused variable 'i' [-Wunused-variable] int i,j; ^ main.cpp:69:11: warning: unused variable 'j' [-Wunused-variable] int i,j; ^