Function should print the cartesian coordinates of the struct argument

How to write a function should print the cartesian coordinates of the struct argument in C Programming Language ?

1. /*This function should print the cartesian coordinates of the struct argument*/
2. void printCartesian(struct cartesian_t n){
3.         printf("Result in cartesian:");
4.         printf("%.3f ", n.x);
5.         if ((n.y) >= 0){
6.                 printf("+");
7.         }
8.         else{}
9.         printf("%.3f \n", n.y);
10. }

Add x and y coordinates to create a new struct in C Program

How to Add x and y coordinates to create a new struct in C Programming Language ?

/*Supply two cartesian_t structs and add x and y coordinates to create a new struct*/

1. struct cartesian_t add(struct cartesian_t a, struct cartesian_t b){
2.         struct cartesian_t coordsSum;
3.         coordsSum.x = (a.x) + (b.x);
4.         coordsSum.y = (a.y) + (b.y);
5.         return coordsSum;
6. }