74 lines
1.3 KiB
C
74 lines
1.3 KiB
C
#include "tools.h"
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FILE * getFile(void) {
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char filename[50];
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printf("Enter file name: ");
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if (scanf("%s", filename) == 1) {
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FILE * file = fopen(filename, "r");
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if (file == NULL) {
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printf("Error file!\n)");
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return NULL;
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} else {
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return file;
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}
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} else {
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printf("Empty name!\n");
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return NULL;
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}
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}
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points getPoints(FILE * file) {
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int i, size = 2;
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point * array = NULL;
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point p;
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double current;
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if (fscanf(file, "%lf", ¤t) != 1) {
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printf("File is empty!\n");
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return (points){.arr=NULL, 0};
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}
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array = (point *)malloc(size * sizeof(point));
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i = 0, p.x = current;
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while (fscanf(file, "%lf", ¤t) == 1) {
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if (++i / 2 >= size) {
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size *= 2;
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array = (point *)realloc(array, size * sizeof(point));
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}
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if (i % 2 == 1) {
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p.y = current;
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array[i / 2] = p;
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} else p.x = current;
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}
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if (i == 0) {
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printf("Array is empty!\n");
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return (points){.arr=NULL, 0};
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}
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return (points){array, (i + 1) / 2};
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}
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double getShift(void) {
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double shift;
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printf("Enter the Shift: ");
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if (scanf("%lf", &shift) == 1) return shift;
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else {
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printf("\nThe Shift is zero!\n");
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return 0;
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}
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}
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void printPolygon(polygon plgn, const char * str) {
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printf("%s", str);
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for (int i = 0; i < plgn.pts.len; ++i) {
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printf("%c = (%.2lf, %.2lf)\n", i + 65, plgn.pts.arr[i].x, plgn.pts.arr[i].y);
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}
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}
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