Parse GPS String for Time and Coordinates

Code

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

void parse_gprmc(char *str) {
    int field = 0;
    int time = 0; 
    int len = strlen(str);

    printf("Time: ");

    for (int i = 0; i < len; i++) {
        if (str[i] == ',') {
            field++;
            
            // Add labels when we hit specific fields
            if (field == 3) printf("\nLatitude: ");
            if (field == 4) printf(" "); // Space before N/S
            if (field == 5) printf("\nLongitude: ");
            if (field == 6) printf(" "); // Space before E/W
            if (field == 7) break;       // Stop after the 7th field
        } 
        else {
            if (field == 1) {
                putchar(str[i]);
                time++;
                if (time == 2 || time == 4) {
                    printf(":");
                }
            }
            else if (field >= 3 && field <= 6) {
                putchar(str[i]);
            }
        }
    }
    printf("\n");
}

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

Solving Approach