158 lines
3.2 KiB
C
158 lines
3.2 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#define SIZE 1000
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typedef struct{
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char* p_na_line;
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struct link* p_na_next_struct;
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}link;
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int main()
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{
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link* pointer_to_start_of_chain = malloc(sizeof(link));
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memset(pointer_to_start_of_chain,0,sizeof(link));
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int read_lines = reading_strings_and_storing_them_in_memory(pointer_to_start_of_chain);
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if(read_lines==0){
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return 0;
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}
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int result=0;
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link* next_link = pointer_to_start_of_chain;
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while(next_link != NULL){
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result=analizing_string(next_link->p_na_line);
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if(result==0){
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printf("ZLE\n");
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}else if(result==1){
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printf("OK\n");
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}else{
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printf("CHYBA\n");
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}
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free(next_link->p_na_line);
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link* ptr=next_link;
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next_link=next_link->p_na_next_struct;
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free(ptr);
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}
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return 0;
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}
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int reading_strings_and_storing_them_in_memory(link* pointer_to_start_of_chain){
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link* next_link = pointer_to_start_of_chain;
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char buffer[SIZE];
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link* ancestor=NULL;
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int counter=0;
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while(1){
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if(fgets(buffer, SIZE, stdin)==NULL||buffer[0]=='\n'){
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free(next_link);
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if(ancestor!=NULL){
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ancestor->p_na_next_struct=NULL;
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}
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break;
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}
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int size=strlen(buffer)+1;
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next_link->p_na_line=malloc(size);
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next_link->p_na_next_struct=malloc(sizeof(link));
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memcpy(next_link->p_na_line, buffer,size);
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ancestor=next_link;
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next_link=next_link->p_na_next_struct;
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counter++;
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}
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return counter;
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}
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int analizing_string(char* pointer){
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float number1, number2, result3;
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char buffer_for_token[SIZE];
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strcpy(buffer_for_token,pointer);
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int counter=0;
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char operant;
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int i=0;
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while(pointer[i]!='\0'){
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if(pointer[i]=='+'||pointer[i]=='/'||pointer[i]=='*'||pointer[i]=='-'){
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operant=pointer[i];
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counter++;
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if(counter>1){
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return -1;
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}
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}
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i++;
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}
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char delim[] =" +=-*/\n";
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char *first_number_cucumber=strtok(buffer_for_token, delim);
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if(first_number_cucumber==NULL||is_number_question_mark(first_number_cucumber)==0){
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return -1;
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}
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char *second_number=strtok(NULL, delim);
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if(second_number==NULL||is_number_question_mark(second_number)==0){
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return -1;
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}
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char *result=strtok(NULL, delim);
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if(result==NULL||is_number_question_mark(result)==0){
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return -1;
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}
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char *token = strtok(NULL, delim);
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if(token!=NULL){
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return -1;
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}
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number1=atof(first_number_cucumber);
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number2=atof(second_number);
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result3=atof(result);
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if(operant=='+' &&result3==number1+number2){
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return 1;
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}
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if(operant=='-'&&(result3==number1-number2)){
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return 1;
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}
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if(operant=='*'&&(result3==number1*number2)){
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return 1;
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}
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if(operant=='/'&&(result3==number1/number2)){
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return 1;
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}
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return 0;
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}
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int is_number_question_mark(char *pointer){
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for(int i=0; pointer[i]!='\0'; i++){
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if (!isdigit(pointer[i])&&pointer[i]!='.'&&pointer[i]!=',') {
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return 0;
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}
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}
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return 1;
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}
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