Beginner1040.c

#include <stdio.h>

int main(){

    float n1, n2, n3, n4, media, exame;

    scanf("%f %f %f %f", &n1, &n2, &n3, &n4);

    media = ((n1 * 2) + (n2 * 3) + (n3 * 4) + (n4 * 1)) / 10;

    printf("Media: %.1f\n", media);

    if (media >= 7.0){
        printf("Aluno aprovado.\n");
    }
    else if (media < 5.0){
        printf("Aluno reprovado.\n");
    }
    else if (media >= 5.0 || media < 6.9){
        printf("Aluno em exame.\n");
        scanf("%f", &exame);

        printf("Nota do exame: %.1f\n", exame);
        media = (exame + media)/2;

        if (media >= 5.0){
            printf("Aluno aprovado.\n");
        }
        else {
            printf("Aluno reprovado.\n");
        }

        printf("Media final: %.1f\n", media);

    }

    return 0;
}