Square and cube of the same variable in C

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Good guys, I have a question. My teacher was teaching functions in C and asked us to do a function with a variable that calculates the square and cube and prints the two.

My code so far has remained so, but it can only return one, or square or cube.

#include <stdio.h>
#include <stdlib.h>

// Assinatura da função (DECLARAÇÃO)
int fSoma(int *valor1);

int main(void) {
    int numero[1], numero2, resultado[1], valor1, x;

    printf("Digite um numero aleatorio"); 
    scanf("%d", &numero[1]);

    for (x=0; x<2; x++){

    resultado[x] = fSoma ( &numero[1] );

    printf("%d \n", resultado[x]);

}
}

    int fSoma(int *valor1){
    int mult[1], x;
    for (x=0; x<2; x++){

    mult[0] = pow(*valor1, 2);
    mult[1] = pow(*valor1, 3);


    return mult[x];

}


}
c

  • Did your teacher ask you for the same function that calculates the square and the cube, or did he ask for a function that calculates the square and a function that calculates the cube? Also, you can already use struct?

  • A single function, I can use anything, so that I can read in a single function, the cube and the square

  • Rethink your logic according to the semantics of commands. When you do return[x] it exits the function and returns to the caller. No use putting the returnwithin a loop, at the first call it will terminate the function. Note also that when you declare mult[1]is reserving memory for 1 int, like, it seems to me, you want memory to 2 ints would need to declare: int mult[2] and the possible indices would be 0 and 1.

1 answer

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I see you’re using pointers, but in the wrong way. One possibility would be to use a function like this:

void quadrado_cubo(int valor, int *quadrado, int *cubo) {
    *quadrado = valor * valor;
    *cubo = valor * valor * valor;
}

And then you call with it:

int numero, quadrado, cubo;
scanf("%d", &numero);
quadrado_cubo(numero, &quadrado, &cubo);

  • I tried using yours, I couldn’t either

  • And type, there in the square void(int value, int *square, int *cube) it wants a value only, for example void square(int value)

  • @Joãomarcelotavares The function has to return the values or it just has to show them with printf?

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