complex2.c

C源码集

#include <stdio.h>

	struct complex
	{
		float real;
		float imag;
	};
// define structure outside main in pre=processor area to make
// it global. Otherwise functions will not know about it

void add(struct complex *first, struct complex *second,
			struct complex *ans);

int main ()
{

	struct complex num1 = {1.7, 3.4}, num2, ans;
	num2.real = 5.1;
	num2.imag = 2.3;
	// or scanf("%f %f", num2.real, num2.imag);

	add(&num1, &num2, &ans);
	printf("(%5.2f, %5.2f) + (%5.2f, %5.2f) is (%5.2f, %5.2f)\n",
				num1.real, num1.imag, num2.real, num2.imag, ans.real, ans.imag);

	return 0;
}

void add (struct complex *first, struct complex *second,
				struct complex *result)
{
	result -> real = first -> real + second -> real;
	(*result).imag = (*first).imag + (*second).imag;
}