Parse GPS String for Time and Coordinates

Code

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

void parse_gprmc(char *nmea) {
char time[15] = {0};
    char latitude[15] = {0};
    char longitude[15] = {0};
    char NS[5] = {0};
    char EW[5] = {0};

    int char_cnt = 0; 
    int delim_cnt = 0; 

    for (int i = 0; nmea[i] != '\0'; i++)
    {   
        if (nmea[i] == ',')
        {
            delim_cnt++;
            char_cnt = 0; 
            continue;
        } 

        // time
        if (delim_cnt == 1)
        {
            time[char_cnt] = nmea[i];
        }
        // lat
        else if (delim_cnt == 3)
        {
            latitude[char_cnt] = nmea[i]; 
        }
        // NS
        else if (delim_cnt == 4)
        {
            NS[char_cnt] = nmea[i]; 
        }
        // long
        else if (delim_cnt == 5)
        {
            longitude[char_cnt] = nmea[i]; 
        }
        // EW
        else if (delim_cnt == 6)
        {
            EW[char_cnt] = nmea[i];
        }

        char_cnt++;
    }

    // print UTC
    printf("Time: %c%c:%c%c:%c%c\n", time[0], time[1], time[2], time[3], time[4], time[5]);

    // print Lat with NS
    printf("Latitude: %c%c%c%c%c%c%c%c %c\n", latitude[0], latitude[1], latitude[2], latitude[3], latitude[4], latitude[5], latitude[6],latitude[7], NS[0]);

    // print long with EW
    printf("Longitude: %c%c%c%c%c%c%c%c%c %c\n", longitude[0], longitude[1], longitude[2], longitude[3], longitude[4], longitude[5], longitude[6], longitude[7], longitude[8], EW[0]);
}

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

Solving Approach

 

 

 

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Input

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

Expected Output

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