String Handling

#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<Windows.h>
#define STUDENTTOTAL 1

typedef struct address
{
    char municipality[15];
    char province[15];
    char city[10];
}ADDR;

typedef struct student
{
    char name[30];
    ADDR STaddress;
    int Age;
    char Gender; //M or F only
    char course[10];
    int yrLevel;
}STUDENT;


void gotoxy(int X, int Y)
{
    COORD coord;
    coord.X = X;
    coord.Y = Y;
    SetConsoleCursorPosition(
        GetStdHandle(STD_OUTPUT_HANDLE),
        coord
        );
}

void strup(char *input)
{
    int index=0;
    for (index; input[index] != '\0'; index++)
        input[index] = toupper(input[index]);
}

STUDENT getinfo()
{
    STUDENT input;
    printf("\n\tPlease enter student information");
    fflush(stdin);
    printf("\n\n\tName: "); gets(input.name); strup(input.name);
    printf("\n\tAddress\n");
    printf("\n\t\tMunicipality: "); gets(input.STaddress.municipality); strup(input.STaddress.municipality);
    printf("\n\t\tProvince: "); gets(input.STaddress.province); strup(input.STaddress.province);
    printf("\n\t\tCity: "); gets(input.STaddress.city); strup(input.STaddress.city); fflush(stdin);
    printf("\n\t\tCourse: "); gets(input.course); strup(input.course);
    printf("\n\t\tYearLevel: "); scanf_s("%d",&input.yrLevel); fflush(stdin);
    printf("\n\t\tAge: "); scanf_s("%d", &input.Age); fflush(stdin);
    printf("\n\t\tGender(M/F): "); scanf_s("%c", &input.Gender, 1); input.Gender = toupper(input.Gender);
    getchar();
    getchar();
    return input;
}
void printAllStudent(STUDENT *S)
//display student information NAME COURSE YRLEVEL
{
    int index;
    printf("\tName\t\t\t\t\tCourse\\Year\n");
    for (index = 81; index; index--)printf("-");
    int x = 8, y = 3;
    for (index = 0; index<STUDENTTOTAL; index++)
        gotoxy(x, y);
    _cputs(S[index].name); x += 35;
    gotoxy(x, y);
    printf_s("%s-%d", S[index].course, S[index].yrLevel);
    y++;
}

void printAll(STUDENT input)
{
    printf("\n\n\tName: "); puts(input.name);
    printf("\n\t\tGender(M/F): "); printf("%c", input.Gender);
    printf("\n\t\tAge: "); printf("%d", input.Age);
    printf("\n\t\tCourse: "); puts(input.course);
    printf("\t\tYearLevel: "); printf("%d", input.yrLevel);
    printf("\n\tAddress\n");
    printf("\n\t\tMunicipality: "); puts(input.STaddress.municipality);
    printf("\t\tProvince: "); puts(input.STaddress.province);
    printf("\t\tCity: "); puts(input.STaddress.city);
}

void main()
{
    STUDENT input[2];
    input[0] = getinfo();
    system("cls");
    fflush(stdin);
    input[1] = getinfo();
    puts("Press any key to continue");
    _getch();
    printAll(input[0]);
    printAll(input[1]);
    _getch();
}