Compilare: main.cpp: In function 'int main()': main.cpp:100:24: warning: suggest parentheses around assignment used as truth value [-Wparentheses] if (val = 2) ^ main.cpp:78:13: warning: unused variable 'pa' [-Wunused-variable] int val,pa,i,j,p; ^~ main.cpp:78:20: warning: unused variable 'p' [-Wunused-variable] int val,pa,i,j,p; ^