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ak2

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This commit is contained in:
Maryna Kravtsova 2020-10-21 14:21:10 +02:00
parent c88cf9bbbb
commit bef9c5185a
1 changed files with 40 additions and 35 deletions
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75
a2/program.c
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@ -12,34 +12,30 @@ struct stack{
void push(char ch){
if(s.size < 100){
assert(s.size < 100);
s.size++;
s.data[s.size] = ch;
}
else{
else
exit(0);
}
}
void pop(){
char pop(){
if(s.size > 0){
assert(s.size > 0);
s.size--;
return (s.data[s.size]);
}
else {
else
exit(0);
}
}
bool find_pair(char a, char b){
if(a == '(' && b == ')')
return true;
else if(a == '{' && b == '}')
if(a == '{' && b == '}')
return true;
else if(a == '<' && b == '>')
if(a == '<' && b == '>')
return true;
else if(a == '[' && b == ']')
if(a == '[' && b == ']')
return true;
return false;
@ -47,18 +43,15 @@ bool find_pair(char a, char b){
}
char right_pair(char a){
char b;
if(a == '('){
if(a == '(')
b = ')';
}
else if(a == '{'){
if(a == '{')
b = '}';
}
else if(a == '['){
if(a == '[')
b = ']';
}
else if(a == '<'){
if(a == '<')
b = '>';
}
return b;
}
@ -74,38 +67,50 @@ int main(){
printf("Read: ");
char *x = fgets(line, 100, stdin);
printf("%s", line);
int l = strlen(line);
int i, j;
int i, j = 0;
char *a = calloc(l, sizeof(char));
char *b = calloc(l, sizeof(char));
for(i = 0; i < l; i++){
//a[i] = gettop();
// b[i] = right_pair(a[i]);
if(line[i] == '{' || line[i] == '(' || line[i] == '[' || line[i] == '<'){
push(line[i]);
a[j] = gettop();
b[j] = right_pair(a[j]);
j++;
//printf("%c", b[i]);
}
else if(line[i] == '}' || line[i] == ')' || line[i] == ']' || line[i] == '>'){
char a = gettop();
if(a != '(' || a != '{' || a != '<' || a != '['){
printf("Unexpected closing brocket %c in %d\n", line[i], i);
if(line[i] == '}' || line[i] == ')' || line[i] == ']' || line[i] == '>'){
//a[i] = gettop();
//b[i] = right_pair(a[i]);
if(s.size == -1){
printf("Unexpected closing bracket %c in %d\n", line[i], i);
return 0;
}
else if(s.size == -1 && !find_pair(gettop(), line[i])){
char b = right_pair(a);
else if(!find_pair(gettop(), line[i])){
printf("Crossed bracket %c in %d, expected %c\n", line[i], i, b);
return 0;
}
else{
}
else{
pop();
}
}
}
}
i = 0;
if(s.size == -1){
printf("All brackest are OK\n");
printf("All brackets OK\n");
}
else {
printf("Missing closing brackets: %s \n", b);
}
free(a);
free(b);
return 0;
}