Main.cc: In function ‘int main()’: Main.cc:38:23: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] 38 | }else if(d5==0&&d6==10.5||d5!=0&&d5>d6||d6!=0&&d5!=0&&d5>d6){ | ~~~~~^~~~~~~~~~ Main.cc:38:61: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] 38 | }else if(d5==0&&d6==10.5||d5!=0&&d5>d6||d6!=0&&d5!=0&&d5>d6){ | ~~~~~~~~~~~~^~~~~~~ Main.cc:40:15: error: expected primary-expression before ‘/’ token 40 | }else /if(d5==0&&d6>0&&d6<10.5||d6==0&&d5==10.5||d6!=0&&d5!=0&&d6>d5)/{ | ^ Main.cc:40:16: error: expected primary-expression before ‘if’ 40 | }else /if(d5==0&&d6>0&&d6<10.5||d6==0&&d5==10.5||d6!=0&&d5!=0&&d6>d5)/{ | ^~