Sort names and addresses alphabetically

Design. A structure computer (as named in the question) has name and address. Several entries (5 here) are read into an array of structures. The array is sorted on name with strcmp(); when the names are out of order the whole structures are swapped, so each address stays with its name. The sorted list is printed.

#include <stdio.h>
#include <string.h>
#define N 5

struct computer {
    char name[30];
    char address[40];
};

int main(void)
{
    struct computer c[N], t;

    for (int i = 0; i < N; i++) {
        printf("Name and address %d: ", i + 1);
        scanf("%29s %39s", c[i].name, c[i].address);
    }

    for (int i = 0; i < N - 1; i++)           /* sort by name */
        for (int j = i + 1; j < N; j++)
            if (strcmp(c[i].name, c[j].name) > 0) {
                t = c[i];
                c[i] = c[j];
                c[j] = t;
            }

    printf("\nAlphabetical list\n");
    for (int i = 0; i < N; i++)
        printf("%-10s %s\n", c[i].name, c[i].address);
    return 0;
}

Sample run

Input (entered one after another): Ram Kathmandu Bibek Pokhara Sita Lalitpur Anil Butwal Hari Bhaktapur

Alphabetical list
Anil       Butwal
Bibek      Pokhara
Hari       Bhaktapur
Ram        Kathmandu
Sita       Lalitpur