Parse GPS String for Time and Coordinates

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

void parse_gprmc(char *nmea) {
    // Your logic here
    int i, j;
    char time[50], lat[50], lon[50];
    for(i = 7, j = 0; nmea[i] != ','; i++, j++) {
        if(j == 2 || j == 5) {
            time[j] = ':';
            i--;
        }
        else {
            time[j] = nmea[i];
        }
    }
    time[j] = '\0';
    for(i = 16, j = 0; nmea[i] != ','; i++, j++) {
        lat[j] = nmea[i];
    }
    lat[j] = '\0';
    for(i = 27, j = 0; nmea[i] != ',';i++, j++) {
        lon[j] = nmea[i];
    }
    lon[j] = '\0';
    printf("Time: %s\nLatitude: %s %c\nLongitude: %s %c\n",time,lat,nmea[25],lon,nmea[37]);
}

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