История изменений

Исправление ~~dikiy~~, 28.01.15 14:23 (текущая версия) :

Вот. немного доработал твою программку:

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

int main(int argc, char **argv)
{
	double x1, y1, x2, y2, x3, y3, x4, y4, k1, k2, b1, b2;
	// checking the sufficiency of the data
	if (argc < 7) {
		printf("usage: c90ab x1 y1 x2 y2 x3 y3\n");
		return 1;
	}
	// data initialization
	x1 = atof(argv[1]);
	y1 = atof(argv[2]);
	x2 = atof(argv[3]);
	y2 = atof(argv[4]);
	x3 = atof(argv[5]);
	y3 = atof(argv[6]);
	// check first exception

	l=sqrt((y2-y1)*(y2-y1)+(x2-x1)*(x2-x1))
	if (l==0.0) {
			printf("Error: line AB doesn't exists!\n");
			return 0;
	}

	skalar_produkt=((x3-x1)*(x2-x1)+(y3-y1)*(y2-y1))/l;

	x4=(x2-x1)*skalar_produkt+x1;
	y4=(y2-y1)*skalar_produkt+y1;
	printf("D (%lf , %lf)\n", x4, y4);
	return 0;
}

Исправление ~~dikiy~~, 28.01.15 14:21:

Вот. немного доработал твою программку:

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

int main(int argc, char **argv)
{
	double x1, y1, x2, y2, x3, y3, x4, y4, k1, k2, b1, b2;
	// checking the sufficiency of the data
	if (argc < 7) {
		printf("usage: c90ab x1 y1 x2 y2 x3 y3\n");
		return 1;
	}
	// data initialization
	x1 = atof(argv[1]);
	y1 = atof(argv[2]);
	x2 = atof(argv[3]);
	y2 = atof(argv[4]);
	x3 = atof(argv[5]);
	y3 = atof(argv[6]);
	// check first exception

	l=sqrt((y2-y1)*(y2-y1)+(x2-x1)*(x2-x1))
	if (l==0.0) {
			printf("Error: line AB doesn't exists!\n");
			return 0;
	}

	skalar_produkt=((x3-x2)*(x2-x1)+(y3-y2)*(y2-y1))/l;

	x4=(x2-x1)*skalar_produkt+x1;
	y4=(y2-y1)*skalar_produkt+y1;
	printf("D (%lf , %lf)\n", x4, y4);
	return 0;
}

Исправление ~~dikiy~~, 28.01.15 14:19:

Вот. немного доработал твою программку:

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

int main(int argc, char **argv)
{
	double x1, y1, x2, y2, x3, y3, x4, y4, k1, k2, b1, b2;
	// checking the sufficiency of the data
	if (argc < 7) {
		printf("usage: c90ab x1 y1 x2 y2 x3 y3\n");
		return 1;
	}
	// data initialization
	x1 = atof(argv[1]);
	y1 = atof(argv[2]);
	x2 = atof(argv[3]);
	y2 = atof(argv[4]);
	x3 = atof(argv[5]);
	y3 = atof(argv[6]);
	// check first exception

	l=sqrt((y2-y1)*(y2-y1)+(x2-x1)*(x2-x1))
	if (l==0.0) {
			printf("Error: line AB doesn't exists!\n");
			return 0;
	}

	skalar_produkt=(x2*x1+y2*y1)/l;

	x4=(x2-x1)*skalar_produkt+x1;
	y4=(y2-y1)*skalar_produkt+y1;
	printf("D (%lf , %lf)\n", x4, y4);
	return 0;
}

Исправление ~~dikiy~~, 28.01.15 14:18:

Вот. немного доработал твою программку:

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

int main(int argc, char **argv)
{
	double x1, y1, x2, y2, x3, y3, x4, y4, k1, k2, b1, b2;
	// checking the sufficiency of the data
	if (argc < 7) {
		printf("usage: c90ab x1 y1 x2 y2 x3 y3\n");
		return 1;
	}
	// data initialization
	x1 = atof(argv[1]);
	y1 = atof(argv[2]);
	x2 = atof(argv[3]);
	y2 = atof(argv[4]);
	x3 = atof(argv[5]);
	y3 = atof(argv[6]);
	// check first exception

	l=sqrt((y2-y1)*(y2-y1)+(x2-x1)*(x2-x1))
	if (l==0.0) {
			printf("Error: line AB doesn't exists!\n");
			return 0;
	}

	skalar_produkt=(x2*x1+y2*y1)/l;

	x4=x2*skalar_produkt+x1;
	y4=y2*skalar_produkt+y1;
	printf("D (%lf , %lf)\n", x4, y4);
	return 0;
}

Исходная версия ~~dikiy~~, 28.01.15 14:17:

Вот. немного доработал твою программку:

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

int main(int argc, char **argv)
{
	double x1, y1, x2, y2, x3, y3, x4, y4, k1, k2, b1, b2;
	// checking the sufficiency of the data
	if (argc < 7) {
		printf("usage: c90ab x1 y1 x2 y2 x3 y3\n");
		return 1;
	}
	// data initialization
	x1 = atof(argv[1]);
	y1 = atof(argv[2]);
	x2 = atof(argv[3]);
	y2 = atof(argv[4]);
	x3 = atof(argv[5]);
	y3 = atof(argv[6]);
	// check first exception

	l=sqrt((y2-y1)*(y2-y1)+(x2-x1)*(x2-x1))
	if (l==0.0) {
			printf("Error: line AB doesn't exists!\n");
			return 0;
	}

	skalar_produkt=(x2*x1+y2*y1)/l;

	x4=x2*skalar_produkt+x1;
	y4=y2*skalar_produkt+y1;
	printf("D (%lf , %lf)\n", x4, y4);
	return 0;
}