Compilare: user.cpp: In function ‘void banda1()’: user.cpp:19:34: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(l*n>n1 || l*n==n1 && si<simax) ^ user.cpp: In function ‘void banda2()’: user.cpp:40:19: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(l*n==n1) ^ user.cpp: In function ‘void banda3()’: user.cpp:68:19: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(nr1==n1) ^ user.cpp: In function ‘void banda4()’: user.cpp:103:19: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(nr1==n1) ^