Compilare: main.cpp: In function 'void formare()': main.cpp:42:18: warning: unused variable 'ok' [-Wunused-variable] int n=strlen(s),ok=1,i=0; ^~ main.cpp: In function 'int calcul(int, int, char)': main.cpp:24:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ main.cpp: In function 'int ordine(char)': main.cpp:36:1: warning: control reaches end of non-void function [-Wreturn-type] } ^