Answer to Question #307892 in C for John

Question

You are given a binary compass which shows the direction you are safe to go to.

The binary compass read n binary digits (bits) which interprets 1 to rotate 90o

to

the left and 0 rotate 90o

to the right. Initially you are facing North. Create a program

for this binary compass.

Sample Output 1:

Enter your name: Glenn G. Noynay

Hi! Glenn G. Noynay

Enter number of bits: 7

Enter 7 binaries: 0 0 0 0 0 0 0

Direction: Go West, Glenn G. Noynay!

Sample Output 2:

Enter your name: Rogelio P. Noynay

Hi! Rogelio P. Noynay

Enter number of bits: 5

Enter 5 binaries: 1 1 1 0 1

Direction: Go East, Rogelio P. Noynay!

Answer 1

#include <stdio.h>
#include <string.h>
#include <stdio.h>

int main() {
    char name[1024];
    int len;
    int n, i;
    int direction = 0;
    int bit;
    char* dir_name[4] = {"North", "East", "South", "West"};

    printf("Enter your name: ");
    fgets(name, 1024, stdin);
    len = strlen(name);
    if (name[len-1] == '\n') {
        name[len-1] = '\0';
    }

    printf("Hi! %s\n", name);
    printf("Enter number of bits: ");
    scanf("%d", &n);

    printf("Enter %d binaries: ", n);
    for (i=0; i<n; i++) {
        scanf("%d", &bit);
        if (bit != 0 && bit != 1) {
            fprintf(stderr, "Incorrect input\n");
            exit(1);
        }
        direction += bit ? -1 : 1;
    }
    direction %= 4;
    if (direction < 0) {
        direction += 4;
    }
    
    printf("Direction: Go %s, %s!\n", dir_name[direction], name);

    return 0;
}