#include<stdio.h>

typedef struct Aluno{

    int matricula;
    char nome[30];
    int idade;

}Aluno;

int Busca(Aluno L[],int *tamVet,Aluno x,int *PosIns);
void InserePosicao(Aluno L[],int n,Aluno x,int PosIns);

int main(void)
{
    Aluno vetor;
    int n = 0;
    int PosIns = 0;
    int tamVet = 10;
    Aluno L[tamVet+1];
    Busca(L,&tamVet,vetor,&PosIns);
//  InserePosicao(L,n,vetor,&PosIns);
    printf("%d",PosIns);
}


int Busca(Aluno L[],int *tamVet,Aluno x,int *PosIns){
    int inf,sup,m;
    inf = 0;
    sup = (*tamVet - 1);
    //printf("%d\n%d",inf,sup);
    while(inf<=sup){
        m = ((inf + sup)/2);
        if(L[m].matricula == x.matricula){
            return m;
        }
        else if(L[m].matricula < x.matricula){
            inf = (m+1);
        }
        else{
            inf = (m-1);
        }
    }
    *PosIns = inf;
    return -1;
}

void InserePosicao(Aluno L[],int n,Aluno x,int PosIns){
    int j;
    for(j=n;j>=PosIns;j--){
        L[j+1] = L[j];
    }
    L[PosIns] = x;
    n++;
}