usaa21/a2/program.c

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#define LINESIZE 100

int i = 0;
int hodnota = 0;
int a = 0;
int hej = 0;
int p = 0;
int main(){
    char r[LINESIZE];
    memset(r, 0, LINESIZE);
    fgets(r, LINESIZE, stdin);
    size_t n;
    n = strlen(r);
    //printf("%ld", n);
   while(r[i] != '\n'){
       if (r[0] != '{' || r[0] != '(' || r[0] != '[' || r[0] != '<') {
           //i = n - 2;

           hej = 1;
           //puts("halo");
       }

       if (r[i] == '{') {
                hodnota = 1;
                i++;
            }
       else if (r[i] == '(') {
           hodnota = 2;
           i++;
       }
       else if (r[i] == '[') {
           hodnota = 3;
           i++;
       }
       else if (r[i] == '<') {
           hodnota = 4;
           i++;
       }

        //printf("hodnota: %d\n", hodnota);
        if (hodnota == 1){
            hej = 0;
            //hodnota = 0;
            for (a = p; a<n; a++){
                //printf("%d", a);
                if (r[a] == '}') {
                    //puts("joj");
                    hej = 1;
                    //r[a] = 'a';
                    p = a;
                    a = n;
                    i++;
                }
                else if (r[a] == ')' || r[a] == ']' || r[a] == '>'){
                    //puts("nie");
                    hej = 0;
                    a = n;
                    i = n - 1;
                }
                else if (a == n - 1 && hej == 0){
                    hej = 4;
                    printf("Read: %s", r);
                    printf("Missing closing brackets: }\n");
                    i = n - 1;
                }
                //hodnota = 0;
            }
        }
        else if (hodnota == 2){
            hej = 0;
            //hodnota = 0;
            for (a = p; a<n; a++){
                if (r[a] == ')') {
                    //puts("hod 2");
                    hej = 1;
                    //r[a] = 'a';
                    p = a;
                    a = n;
                    i++;
                }
                else if (r[a] == '}' || r[a] == ']' || r[a] == '>'){
                    //puts("nasiel");
                    hej = 0;
                    a = n;
                    i = n;
                }
                else if (a == n - 1 && hej == 0){
                    hej = 4;
                    printf("Read: %s", r);
                    printf("Missing closing brackets: )\n");
                    i = n - 1;
                }
            }
        }
        else if (hodnota == 3) {
            hej = 0;
            //hodnota = 0;
            for (a = p; a < n; a++) {
                //puts("neidem");
                if (r[a] == ']') {
                    //puts("nasiel som");
                    //puts("hod 3");
                    hej = 1;
                    //r[a] = 'a';
                    p = a;
                    a = n;
                    i++;
                }
                else if (r[a] == '}' || r[a] == ')' || r[a] == '>'){
                    //puts("nie");
                    hej = 0;
                    a = n;
                    i = n - 1;

                }
                else if (a == n - 1 && hej == 0){
                    hej = 4;
                    printf("Read: %s", r);
                    printf("Missing closing brackets: ]\n");
                    i = n - 1;
                }
            }
        }
        else if (hodnota == 4){
            hej = 0;
            //hodnota = 0;
            for (a = p; a<n; a++){
                if (r[a] == '>') {
                    //puts("hod 4");
                    hej = 1;
                    //r[a] = 'a';
                    p = a;
                    a = n;
                    i++;
                }
                else if (r[a] == '}' || r[a] == ']' || r[a] == ')'){
                    //puts("nasiel");
                    hej = 0;
                    a = n;
                    i = n - 1;
                }
                else if (a == n - 1 && hej == 0){
                    hej = 4;
                    printf("Read: %s", r);
                    printf("Missing closing brackets: >\n");
                    i = n - 1;
                }
            }

        }
    if (hodnota == 0){

        if (r[i] == '}' || r[i] == ')' || r[i] == ']' || r[i] == '>') {
            hej = 3;
            //puts("ahoj");
            printf("Read: %s", r);
            if (r[i] == '}'){printf("Unexpected closing bracket } in %d\n", i);}
            else if (r[i] == ')'){printf("Unexpected closing bracket ) in %d\n", i);}
            else if (r[i] == ']'){printf("Unexpected closing bracket ] in %d\n", i);}
            else if (r[i] == '>'){printf("Unexpected closing bracket > in %d\n", i);}
            i = n - 2;
        }
        i++;
    }
    //else{
    //    i++;
    //}
   }
    if (hej == 1){
        printf("Read: %s", r);
        puts("All brackets OK");
    }
    if (hej == 0){
        printf("Read: %sCrossed bracket OK\n", r);
        //printf("%s\n", r);
    }

    return 0;
}