Inverting a phrase and write it weirdly with c - c

Question

my programming teacher have sent some exercises for practice, and this one I've no clue for a way to solve it.
In his example, he asks: write a program that gets a phrase or a word, turn it backwards and write it weirdly.
I'm trying to use the phrase "ABCDE" write it backwards and then, start writing the phrase from the middle.
In the end, he wants something like: CBAED
All I have so far, is the phrase/word backwards, like: EDCBA
Well, this is my code so far:
#include <stdio.h>
void inverter();
int main(){
printf("sentence to revert: ");
inverter();
return 0;
}
void inverter(){
char letra;
scanf("%c",&letra);
if( letra != '\n'){
inverter();
printf("%c",letra);
}
}
As you guys have seen, I'm a newbie in C (and in English) so, if any of you could give me a way to proceed, I would appreciate it a lot.
Edit: I believe I was not happy on the phrase I've selected as an exemple, so I've changed it.

Answer 1

Without telling you exactly the code to write, because you are asking for help with academic work, you can try this:
Read in a line of text.
Using the length of the line (scanf returns an int with the number of characters read if I'm not mistaken), loop through it backwards, printing each character at a time.
Something to try would be like this:
//This is pseudocode. Do not copy/paste
for(int i = length of line; i > 0; i--) {
print out line[i];
}
Then divide the length by 2 and run two loops in reverse, one starting in the middle:
//This is Psuedocode. Do not copy/paste
for(int i = middle of line; i > 0; i--) {
print out line[i];
}
And then another starting at the end:
//This is Pseudocode. Do not copy/paste
for(int i = length of line; i > middle of line; i--) {
print out line[i];
}
????
Profit
Obviously, you will have to tweak a few things here and there. For example, i = length of line will cause a runtime error, but you're here to learn and I believe in learning by doing.