f

a1/program.c

@@ -4,49 +4,18 @@
 #include <stdbool.h>
 #include <math.h>
 
-
-char* check_math_problem(const char* problem) 
-{
-    
-    //char* copy;
-    char* copy = (char*)malloc((strlen(problem) + 1) * sizeof(char));
-    strcpy(copy, problem); 
-    if (copy == NULL) {
-        fprintf(stderr, "Error with memory\n");
-        exit(EXIT_FAILURE);
-    }
-
-
-    char* src = copy;
-    char* dst = copy;
-    while (*src != '\0') {
-        if (*src != ' ') {
-            *dst++ = *src;
-        }
-        src++;
-    }
-    *dst = '\0';
-
-    
-    if (strlen(copy) == 0) {
-        free(copy);
+char* check_math_problem(const char* problem) {
+    if (strlen(problem) == 0) {
         return "CHYBA";
     }
-   
-    
+
     double n1, n2, res;
     char sing, equel;
-    
-    if(sscanf(copy, "%lf%c%lf%c%lf", &n1, &sing, &n2, &equel, &res) !=5)
-    {
-        free(copy);
+
+    if(sscanf(problem, "%lf %c %lf %c %lf", &n1, &sing, &n2, &equel, &res) != 5) {
         return "CHYBA";
     }
-   // printf("%lf%c%lf%c%lf", n1, sing, n2, equel, res);
-    //return "1234";
-    
 
-    
     double result;
     switch (sing) {
         case '+':
@@ -60,34 +29,27 @@ char* check_math_problem(const char* problem)
             break;
         case '/':
             if (fabs(n2) < 1e-9) { 
-                free(copy);
                 return "ZLE";
             }
             result = n1 / n2;
             break;
         default:
-            free(copy);
             return "CHYBA";
     }
-    free(copy);
-    
+
     if (fabs(result - res) < 0.01) {
         return "OK";
     } else {
         return "ZLE";
     }
-
-    return "0";
-   
 }
 
 int main() {
     char problem[100]; 
 
-    
     while (true) {
         fgets(problem, sizeof(problem), stdin);
-        if (strlen(problem) == 1) { 
+        if (strlen(problem) <= 1) { 
             break;
         }
         printf("%s\n", check_math_problem(problem));