[PROG2] Ficha 1 | Exercício 4

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#define PI 3.14159265
typedef struct ComplexRect
{
    float real , imag ;
} ComplexRect ;
typedef struct ComplexAng
{
    float mod , ang ;
} ComplexAng ;
void rect_to_polar(ComplexRect *nrects , ComplexAng *nangs , int n)
{
    int i ;
    for (i = 0 ; i < n ; i++)
    {
        nangs[i].mod = sqrt(nrects[i].imag * nrects[i].imag + nrects[i].real * nrects[i].real) ;
        nangs[i].ang = atan2(nrects[i].imag , nrects[i].real) * 180 / PI ;
    }
}
int main()
{
    int i , n ;
    ComplexRect *nrects ;
    ComplexAng *nangs ;
    printf ("Quantidade de números complexos a converter : ") ;
    scanf ("%d" , &n) ;
    printf ("Insira o coeficiente das partes real e imaginária :\n") ;
    nrects = (ComplexRect*) malloc (n * sizeof(ComplexRect)) ;
    if (nrects == NULL)
    {
        system ("clear") ;
        printf ("Memória não disponível !\n") ;
        return -1 ;
    }
    for (i = 0 ; i < n ; i++)
    {
        printf ("... do %dº número complexo: " , i + 1) ;
        scanf ("%f %f" , &nrects[i].real , &nrects[i].imag) ;
    }
    nangs = (ComplexAng*) malloc (n * sizeof(ComplexAng)) ;
    rect_to_polar(nrects , nangs , n) ;
    printf ("As respectivas representações polares são :\n") ;
    for (i= 0 ; i < n ; i++) printf ("mod=%.2f   ang=%.f\n" , nangs[i].mod , nangs[i].ang) ;
    free (nrects) ;
    free (nangs) ;
    return 0 ;
}