111 lines
5.0 KiB
C
111 lines
5.0 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 <stdbool.h>
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#include <math.h>
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int main() {
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char* input = (char*) calloc(100, sizeof(char));
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char symbol;
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int counter;
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int operation;
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char* number1 = (char*) calloc(25, sizeof(char));
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char* number2 = (char*) calloc(25, sizeof(char));
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char* result = (char*) calloc(30, sizeof(char));
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char* ptr;
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bool equals = false;
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for(int i = 0; fgets(input, 100, stdin) != NULL; i++){
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if(!input || !strcmp(input, "") || input[0] == EOF || input[0] == '\n' || input[0] == '\0')
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break;
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counter = 0;
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operation = 0;
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equals = false;
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memset(number1, '\0', 25);
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memset(number2, '\0', 25);
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memset(result, '\0', 30);
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while(input[counter] != '\0' && input[counter] != '\n'){
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symbol = input[counter++];
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while (isspace(symbol))
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symbol = input[counter++];
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if(symbol == '\0' || symbol == '\n')
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break;
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switch (symbol) {
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case '+':
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operation = 1;
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break;
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case '-':
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if(operation == 0)
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operation = 2;
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else{
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result[strlen(result)] = symbol;
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result[strlen(result)] = '\0';
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}
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break;
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case '*':
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operation = 3;
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break;
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case '/':
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operation = 4;
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break;
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case '=':
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equals = true;
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break;
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default:
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if (isdigit(symbol) || symbol == '.'){
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if (operation == 0) {
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number1[strlen(number1)] = symbol;
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number1[strlen(number1)] = '\0';
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}
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else if(!equals){
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number2[strlen(number2)] = symbol;
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number2[strlen(number2)] = '\0';
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}
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else{
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result[strlen(result)] = symbol;
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result[strlen(result)] = '\0';
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}
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}
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else{
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printf("CHYBA\n");
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goto LABEL;
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}
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break;
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}
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}
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LABEL:
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switch(operation){
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case 1:
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if(strtof(number1, &ptr) != roundf(strtof(number1, &ptr)))
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printf("%s\n", (roundf((strtof(number1, &ptr) + strtof(number2, &ptr))*100)/100 > strtof(result, &ptr) - 0.001 && roundf(strtof(number1, &ptr) + strtof(number2, &ptr)*100)/100 < strtof(result, &ptr) + 0.001) ? "OK" : "ZLE");
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else
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printf("%s\n", (strtof(number1, &ptr) + strtof(number2, &ptr) > strtof(result, &ptr) - 0.001 && strtof(number1, &ptr) + strtof(number2, &ptr) < strtof(result, &ptr) + 0.001) ? "OK" : "ZLE");
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break;
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case 2:
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if(strtof(number1, &ptr) != roundf(strtof(number1, &ptr)))
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printf("%s\n", (roundf((strtof(number1, &ptr) - strtof(number2, &ptr))*100)/100 > strtof(result, &ptr) - 0.001 && roundf(strtof(number1, &ptr) - strtof(number2, &ptr)*100)/100 < strtof(result, &ptr) + 0.001) ? "OK" : "ZLE");
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else
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printf("%s\n", (strtof(number1, &ptr) - strtof(number2, &ptr) > strtof(result, &ptr) - 0.001 && strtof(number1, &ptr) - strtof(number2, &ptr) < strtof(result, &ptr) + 0.001) ? "OK" : "ZLE");
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break;
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case 3:
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if(strtof(number1, &ptr) != roundf(strtof(number1, &ptr)))
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printf("%s\n", (roundf((strtof(number1, &ptr) * strtof(number2, &ptr))*100)/100 > strtof(result, &ptr) - 0.001 && roundf(strtof(number1, &ptr) * strtof(number2, &ptr)*100)/100 < strtof(result, &ptr) + 0.001) ? "OK" : "ZLE");
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else
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printf("%s\n", (strtof(number1, &ptr) * strtof(number2, &ptr) > strtof(result, &ptr) - 0.001 && strtof(number1, &ptr) * strtof(number2, &ptr) < strtof(result, &ptr) + 0.001) ? "OK" : "ZLE");
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break;
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case 4:
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if(strtof(number1, &ptr) != roundf(strtof(number1, &ptr)))
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printf("%s\n", (roundf((strtof(number1, &ptr) / strtof(number2, &ptr))*100)/100 > strtof(result, &ptr) - 0.001 && roundf(strtof(number1, &ptr) / strtof(number2, &ptr)*100)/100 < strtof(result, &ptr) + 0.001) ? "OK" : "ZLE");
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else
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printf("%s\n", (strtof(number1, &ptr) / strtof(number2, &ptr) > strtof(result, &ptr) - 0.001 && strtof(number1, &ptr) / strtof(number2, &ptr) < strtof(result, &ptr) + 0.001) ? "OK" : "ZLE");
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break;
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default:
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printf("CHYBA\n");
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}
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}
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free(input);
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return 0;
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} |