Accentuation in printing and blank fields

Question

Good people, I am just about to explore the world of Velopers, so I will need a discount for the many mistakes in my little program. I didn’t find an answer here, so I’ll ask.

The program below should simply register 5 people and print on the screen when requested. But although the program is accentuating in the menus, when printing on the screen the data registered they do not appear.

Another thing would be to not let the user "skip" parts of the registration, ie necessarily before continuing the registration the person should write something, even if it is a letter. Something like a loop, but for random characters..

#include <string.h>
#include <stdlib.h>
#include <locale.h>
#include <conio.h>
#include <ctype.h>
#include <time.h>

struct cad{
int codigo;
char nome[50];
char email[50];
char telefone[20];
};

int main(){
    srand(time(NULL));
    setlocale(LC_ALL,"");
    struct cad ficha [5];
    int vetor [5];
    int cod=1, op, i, j, info=0;
    char novo;
    do{
        printf("\n****  Base cadastral  ****\n");
        printf(" Selecione uma opção do Menu: \n\n");
        printf(" 1 - Insira um novo cadastro    \n");
        printf(" 2 - Mostrar todos os cadastros \n");
        printf(" 0 - Sair                       \n");
        printf("\nDigite a opção desejada: ");
        scanf("%d",&op);
        fflush(stdin);
        system("cls");
        switch (op){
            case 0: 
                printf (" Finalizando programa\n");
                break;
                
            case 1:
                do{
                    if( info > 4 ){
                        printf("\n\nLista cheia\n\n");
                        system("pause");
                        system("cls");
                        break;
                    }
                
                for (i=0; i<5; i++){
                vetor [i] = rand()%5;
                    for (j=0; j<i; j++){
                        if (vetor [i] == vetor [j]);
                        vetor[i] = (rand()%5);
                    }
                } 
                ficha[info].codigo = cod;            
                printf ("\nNovo Cadastro\n");
                printf (" Número de cadastro %d", cod); 
                
                printf("\n Insira nome:\n ");
                gets(ficha[info].nome);
                fflush(stdin);
                                
                printf ("\n insira email\n ");
                gets (ficha[info].email);
                fflush(stdin);
                    
                printf ("\n insira telefone\n ");
                gets (ficha[info].telefone);
                fflush(stdin);
                
                printf (" Pessoa cadastrada com sucesso!\n\n");
                printf (" -----------------------------------\n");
                system("\npause");
                system("cls");
                
                cod = cod + 1;              
                info = info + 1;
                
                printf("\n Cadastrar outra pessoa? S/N ");
                novo = getch();
                system("cls");                          
                }while(toupper(novo) != 'N' ); 
                break;
                
            case 2:
                if(info==0){
                printf("\n Sem cadastros \n");
                system("\npause");
                system("cls");
                }
                else
                    for (i=0;i<info;i++){
                    printf (" Código %d\n",ficha[i].codigo);
                    printf (" Nome %s\n",ficha[i].nome);
                    printf (" Email %s\n",ficha[i].email);
                    printf (" Telefone %s\n",ficha[i].telefone);
                    printf ("\n");
                    }
                printf("\n\n" );
                system ("pause");
                system("cls");
                break;
                
            default:
                printf("Opção inválida!\n");
                system("pause");
                system("cls");
            }
    }while(op != 0);
return 0;
}