64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
#include <stdio.h>
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#include <string.h>
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int isOpening(char c) {
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return c == '{' || c == '[' || c == '(' || c == '<';
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}
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int isClosing(char c) {
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return c == '}' || c == ']' || c == ')' || c == '>';
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}
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int isMatching(char open, char close) {
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return (open == '{' && close == '}') ||
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(open == '[' && close == ']') ||
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(open == '(' && close == ')') ||
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(open == '<' && close == '>');
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}
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int main() {
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char input[101];
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char stack[100];
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int top = -1;
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// printf("");
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fgets(input, 101, stdin);
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printf("Read: %s", input);
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for (int i = 0; i < strlen(input); i++) {
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char current = input[i];
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if (isOpening(current)) {
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if (top < 99) {
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stack[++top] = current;
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} else {
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printf("Stack is full\n");
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return 1;
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}
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} else if (isClosing(current)) {
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if (top == -1) {
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printf("Unexpected closing bracket %c in %d.\n", current, i);
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return 0;
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}
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if (!isMatching(stack[top], current)) {
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printf("Crossed bracket '%c' in %d , expected \n", current, i);
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(stack[top] == '{') ? '}' :
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(stack[top] == '[') ? ']' :
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(stack[top] == '(') ? ')' : '>',
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current, i;
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return 0;
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}
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top--;
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}
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}
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if (top != -1) {
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printf("Unexpected opennig bracket\n");
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return 1;
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}
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printf("All brackets OK\n");
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return 0;
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}
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