Compilare: main.cpp: In function 'int main()': main.cpp:117:24: warning: 'jans' may be used uninitialized in this function [-Wmaybe-uninitialized] out<<ians<<" "<<jans<<"\n"; ^~~~ main.cpp:117:13: warning: 'ians' may be used uninitialized in this function [-Wmaybe-uninitialized] out<<ians<<" "<<jans<<"\n"; ^~~ main.cpp:32:7: warning: 'colour' may be used uninitialized in this function [-Wmaybe-uninitialized] char colour; ^~~~~~