Write a function that returns 2 for input 1 and returns 1 for 2 - GeeksQuiz

Write a function that returns 2 for input 1 and returns 1 for 2 - GeeksQuiz
Write a function which returns 1 that 2 is passed and return 2 when 1 is passed.

int invert(int x) {    if (x == 1) return 2;    else return 1; }

Another solution is to use subtraction

int invertSub(int x) {    return (3-x); }

We can also use bitwise xor operator.

int invertXOR(int x) {    return (x ^ 1 ^ 2); }

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