Compilare: main.cpp: In function 'int main()': main.cpp:53:11: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(sv = 1) ^ main.cpp:58:11: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if(sv = 2) ^ main.cpp:12:9: warning: unused variable 'j' [-Wunused-variable] int i, j, x; ^