106 lines
2.5 KiB
C
106 lines
2.5 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdbool.h>
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#define STACK_SIZE 10
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struct stack_glavny {
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float data[STACK_SIZE];
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int size;
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};
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void initialize(struct stack_glavny* stack) {
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stack->size = -1;
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}
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int push(struct stack_glavny* stack, float value) {
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if (stack->size < STACK_SIZE - 1) {
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stack->size++;
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stack->data[stack->size] = value;
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return true;
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} else {
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return false;
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}
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}
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int pop(struct stack_glavny* stack, float* result) {
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if (stack->size >= 0) {
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*result = stack->data[stack->size];
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stack->size--;
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return true;
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} else {
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return false;
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}
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}
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int operation_insert_result(struct stack_glavny* stack, char operation) {
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float operand1, operand2, result;
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if (pop(stack, &operand2) && pop(stack, &operand1)) {
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switch (operation) {
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case '+':
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result = operand1 + operand2;
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break;
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case '-':
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result = operand1 - operand2;
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break;
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case '*':
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result = operand1 * operand2;
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break;
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case '/':
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if (operand2 == 0) {
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printf("Chyba: Delenie nulou.\n");
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return false;
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}
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result = operand1 / operand2;
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break;
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default:
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printf("Chyba: Neplatná operácia.\n");
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return false;
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}
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if (!push(stack, result)) {
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printf("Chyba: Zásobník je plný.\n");
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return false;
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}
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return true;
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} else {
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printf("Chyba: Nedostatok operandov pre operáciu.\n");
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return false;
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}
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}
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int main() {
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struct stack_glavny stack;
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initialize(&stack);
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char input[20];
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while (1) {
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if (!fgets(input, sizeof(input), stdin)) {
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printf("no␣input");
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break;
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}
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float value;
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if (sscanf(input, "%f", &value) == 1) {
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if (!push(&stack, value)) {
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printf("Chyba: Zásobník je plný.\n");
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break;
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}
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} else if (input[0] == '+' || input[0] == '-' || input[0] == '*' || input[0] == '/') {
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if (!operation_insert_result(&stack, input[0])) {
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break;
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}
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} else {
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printf("Chyba: Neplatný vstup.\n");
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break;
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}
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for (int i = 0; i <= stack.size; i++) {
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printf("%.2f ", stack.data[i]);
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}
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printf("\n");
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}
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return 0;
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} |