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Update 'a1/program.c'

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This commit is contained in:
Anzhelika Nikolaieva 2023-11-01 13:52:01 +00:00
parent d1ec019aeb
commit 50a1cbc30c
1 changed files with 50 additions and 60 deletions
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110
a1/program.c
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@ -1,67 +1,19 @@
#include <stdio.h> #include <stdio.h>
#include <string.h> #include <string.h>
#include <stdbool.h> #include <stdbool.h>
#include <stdlib.h>
bool brackets(const char *code) { #define MAX_SIZE 100
int stack[100];
int top = -1;
struct stack {
for (int i = 0; code[i] != '\0'; i++) { char data[MAX_SIZE];
if (code[i] == '(' || code[i] == '[' || code[i] == '{' || code[i] == '<') { int size;
stack[++top] = i; } stack;
} else if (code[i] == ')' || code[i] == ']' || code[i] == '}' || code[i] == '>') {
if (top == -1) {
printf("Unexpected closing bracket %c in %d\n", code[i], i);
return false;
}
int opening = stack[top--];
char expected_opening = 0;
if (code[i] == ')') {
expected_opening = '(';
} else if (code[i] == ']') {
expected_opening = '[';
} else if (code[i] == '}') {
expected_opening = '{';
} else if (code[i] == '>') {
expected_opening = '<';
}
if (code[opening] != expected_opening) {
printf("Crossed bracket %c in %d, expected %c\n", code[i], i, expected_opening);
return false;
}
}
}
while (top >= 0) {
int opening = stack[top--];
char unclosed = code[opening];
char expected_closing = 0;
if (unclosed == '(') {
expected_closing = ')';
} else if (unclosed == '[') {
expected_closing = ']';
} else if (unclosed == '{') {
expected_closing = '}';
} else if (unclosed == '<') {
expected_closing = '>';
}
if (top == -1) {
printf("Missing closing brackets: %c\n", expected_closing);
return false;
}
}
return top == -1;
}
int main() { int main() {
char code[100]; char code[MAX_SIZE];
stack.size = 0;
fgets(code, sizeof(code), stdin); fgets(code, sizeof(code), stdin);
if (code[strlen(code) - 1] == '\n') { if (code[strlen(code) - 1] == '\n') {
@ -70,11 +22,49 @@ int main() {
printf("Read: %s\n", code); printf("Read: %s\n", code);
if (brackets(code)) { char missing_closing[MAX_SIZE];
int missing_count = 0;
for (int i = 0; code[i] != '\0'; i++) {
if (code[i] == '(' || code[i] == '[' || code[i] == '{' || code[i] == '<') {
if (stack.size < MAX_SIZE) {
stack.data[stack.size++] = code[i];
} else {
exit(0);
}
} else if (code[i] == ')' || code[i] == ']' || code[i] == '}' || code[i] == '>') {
if (stack.size == 0) {
printf("Unexpected closing bracket %c in %d\n", code[i], i);
return 0;
}
char opening = stack.data[stack.size - 1];
stack.size--;
if ((code[i] == ')' && opening != '(') ||
(code[i] == ']' && opening != '[') ||
(code[i] == '}' && opening != '{') ||
(code[i] == '>' && opening != '<')) {
printf("Crossed bracket %c in %d, expected %c\n", code[i], i, opening);
return 0;
}
}
}
while (stack.size > 0) {
char unclosed = stack.data[--stack.size];
missing_closing[missing_count++] = (unclosed == '(') ? ')' : (unclosed == '[') ? ']' : (unclosed == '{') ? '}' : '>';
if (missing_count >= MAX_SIZE) {
exit(0);
}
}
if (missing_count > 0) {
printf("Missing closing brackets: %s\n", missing_closing);
} else {
printf("All brackets OK\n"); printf("All brackets OK\n");
} }
return 0; return 0;
} }