All submissions

Parse GPS String for Time and Coordinates

Code

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

void parse_gprmc(char *nmea) {
    char item[7][10] = {0};
    int idx = 0;
    char *p0 = nmea;
    char *p1 = nmea;
    do {
        if ((*p1 == ',') || (*p1 == '\0')) {
            char *tgt = item[idx++];
            int size = 0;
            while ((p0 < p1) && (size < (10 - 1))) {
                *tgt++ = *p0++;
                size++;
            }
            *tgt = '\0';
            p0++;
        }
    } while (*p1++);

    p0 = item[1];
    printf("Time: %c%c:%c%c:%c%c\n",
        p0[0], p0[1], p0[2], p0[3], p0[4], p0[5]);
    printf("Latitude: %s %s\n", item[3], item[4]);
    printf("Longitude: %s %s\n", item[5], item[6]);
}

int main() {
    char nmea[100];
    fgets(nmea, sizeof(nmea), stdin);
    parse_gprmc(nmea);
    return 0;
}

Solving Approach

 

 

 

Loading...

Input

$GPRMC,123519,A,4807.038,N,01131.000,E

Expected Output

Time: 12:35:19 Latitude: 4807.038 N Longitude: 01131.000 E