multiple if and a single else condition

Question

I am having multiple if in my controller action

As mentioned below
if() { } if() { } if() { } if() { }
Now i want a single else (execute when all if condition fails..i.e false)

Answer 1

You can use a boolean variable as a flag and set it to true when a if condition is true then you can use that flag to check whether at-least one if block was a sucess

Answer 2

bool failed = true;
if() { failed=false; } if() { failed=false; } if() { failed=false; } if(failed) {}