Write a function in C programming that returns 2 when the input is 1 and 1 when the input is 2

You need to make a function that returns 2 for input 1 and returns 1 for input 2. This function can be made in various ways depending on the logic you use. The simplest way is to use a conditional statement, if the number is 1, return 2, otherwise return 1, other ways include using math operations (any kind will work) and XOR operations.

Example

#include <stdio.h>
// Method 1 using the if statement
int reverseif(int x) {
   if (x == 1) return 2;
   else return 1;
}
// Method 2 using the subtarction form sum of the two numbers (3 in this case)
int reversesub(int x){
   return (3-x);
}
int main() {
   printf("%d</p><p>", reverseif(1));
   printf("%d</p><p>", reversesub(2));
   return 0;
}

Output

2
1

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