#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <assert.h>

typedef int Number;  // makes a new type called Number that is
                     // interchangeable with an int

// format is
// typedef «something that looks like a declaration»
//
// int Number;  // looks like a declaration

int main(int argc, char* argv[]) {
    
    Number n = 5;
    printf("%d\n", n);

    return EXIT_SUCCESS;
}
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