95 lines
2.2 KiB
C
95 lines
2.2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <math.h>
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void strip_spaces(char *str) {
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char temp[1000];
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int j = 0;
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int i = 0;
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while (str[i]) {
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if (isspace(str[i]) && (j == 0 || isspace(temp[j - 1]) || temp[j - 1] == '=' || temp[j - 1] == '+' || temp[j - 1] == '-' || temp[j - 1] == '*' || temp[j - 1] == '/')) {
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i++;
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} else {
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temp[j++] = str[i++];
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}
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}
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temp[j] = '\0';
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strcpy(str, temp);
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}
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int parse_equation(char *line, double *num1, double *num2, char *op, double *result) {
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strip_spaces(line);
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char *ptr = line;
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char *endptr;
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*num1 = strtod(ptr, &endptr);
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if (ptr == endptr) return 0;
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ptr = endptr;
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while (isspace(*ptr)) ptr++;
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if (*ptr != '+' && *ptr != '-' && *ptr != '*' && *ptr != '/') return 0;
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*op = *ptr;
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ptr++;
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while (isspace(*ptr)) ptr++;
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*num2 = strtod(ptr, &endptr);
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if (ptr == endptr) return 0;
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ptr = endptr;
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while (isspace(*ptr)) ptr++;
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if (*ptr != '=') return 0;
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ptr++;
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while (isspace(*ptr)) ptr++;
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*result = strtod(ptr, &endptr);
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if (ptr == endptr) return 0;
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while (isspace(*endptr)) endptr++;
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if (*endptr != '\0' && *endptr != '\n') return 0;
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return 1;
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}
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double calculate(double num1, double num2, char op) {
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switch (op) {
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case '+': return num1 + num2;
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case '-': return num1 - num2;
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case '*': return num1 * num2;
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case '/': return num1 / num2;
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default: return NAN;
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}
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}
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double round_to_2(double value) {
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return round(value * 100) / 100;
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}
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int main() {
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char line[1000];
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while (fgets(line, sizeof(line), stdin)) {
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if (line[0] == '\n') break;
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double num1, num2, expected_result;
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char op;
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if (!parse_equation(line, &num1, &num2, &op, &expected_result)) {
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printf("CHYBA\n");
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continue;
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}
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double actual_result = calculate(num1, num2, op);
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actual_result = round_to_2(actual_result);
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if (actual_result == expected_result) {
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printf("OK\n");
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} else {
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printf("ZLE\n");
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}
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}
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return 0;
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} |