typedef struct
{
    char firstName[10];
    char lastName[10];
    char gender[10];
    char age[2];
    char eyeColor[10];
} Person; // create a person struct

size_t stringlen(const char *); // function prototype of stringlen
char * stringcpy(char *, const char *); // function prototype of stringcpy
char * stringcat(char *, const char *); // function prototype of stringcat
int isEqual(const Person*, const Person*); // function prorotype for isEqual

int main()
{
    Person person1;
    Person person2;
    printf("Enter first name: ");
    fgets(person1.firstName, 20, stdin);

    printf("Enter last name: ");
    fgets(person1.lastName, 20, stdin);

    printf("Enter gender: ");
    fgets(person1.gender, 10, stdin);

    printf("Enter age: ");
    fgets(person1.age, 2, stdin);

    printf("Enter eye color: ");
    fgets(person1.eyeColor, 10, stdin);

    if (isEqual(&person1, &person2)) {
        printf("Person 1 and Person 2 are equal\n");
    } else {
        printf("Person 1 and Person 2 are not equal\n");
    }
}

Output
Enter first name: Tori
Enter last name: Torii
Enter gender: Female
Enter age: 20
Enter eye color: Person 1 and Person 2 are equal
Press any key to continue . . .