diff --git a/du4/program b/du4/program
index e5fc2da..b240720 100755
Binary files a/du4/program and b/du4/program differ
diff --git a/du4/program.c b/du4/program.c
index cfb85f3..474081f 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -5,12 +5,14 @@
 #include <ctype.h>
 
 
-int main() {
-        int i,j; 
+
+int main(){
+
+       int i,j; 
        double number1, number2, summary,msum; 
        char operand, equ; 
        float rsum=0;
-       /*       char input[1000];
+/*       char input[1000];
        char num_str[30] = {0};
        float numbers[3];
        fgets(input, 999, stdin);
@@ -37,7 +39,7 @@ int main() {
 */ 
     char* input = calloc(1000, 1);
     while (1) {
-        
+       
         input = fgets(input, 1000, stdin);
         if (input == NULL) break;
  
@@ -45,9 +47,9 @@ int main() {
         if (input[0] == '\n' || input[0] == EOF || strlen(input) <= 0)
             break;
  
-        float values[3] = {0}; 
+        float values[3] = {0};
         char operation = 0;    
-
+        
         int k = 0; 
         int num = strlen(input);
         for (int i = 0; i < num; i++) {
@@ -58,7 +60,7 @@ int main() {
             if (isalpha(input[i]))
                 break;
  
-          
+            
             if (i < strlen(input) && (isdigit(input[i]) || input[i] == '.' || (input[i] == '-' && isdigit(input[i + 1])))) {
                 char temp[100] = {0}; 
                 for (int j = 0; i < strlen(input) && (isdigit(input[i]) || input[i] == '.' || input[i] == '-'); j++) {
@@ -73,54 +75,26 @@ int main() {
             }
         }
  
-       
+        
         if (k != 3) {
             printf("CHYBA\n");
             continue;
         }
  
+        
         if (operation == 0 && values[1] < 0) {
             operation = '-';
             values[1] = abs(values[1]); 
         }
  
-        
-        float result = 0;
- 
-        switch (operation) {
-        case '+': {
-            result = values[0] + values[1];
-            break;
-        }
-        case '-': {
-            result = values[0] - values[1];
-            break;
-        }
-        case '/': {
-            result = values[0] / values[1];
-            break;
-        }
-        case '*': {
-            result = values[0] * values[1];
-            break;
-        }
-        default: {
-            printf("CHYBA\n");
-            continue;
-        }
-        }
- 
-        
-        char result_string[50];
-        sprintf(result_string, "%.2f", result);
-        result = atof(result_string);
- 
-        if (result == values[2])
-            printf("OK\n");
-        else
-            printf("ZLE\n");
-    }
-     if((operand == '/') && (number2 == 0)){
+       
+        float result = 0;     
+      
+      
+      
+////////////////////////////////////////////////  
+      
+          if((operand == '/') && (number2 == 0)){
                 printf("Nulou sa nedá deliť");
           }
           if(operand !='+' && operand !='-' && operand !='*' && operand !='/'){
@@ -128,22 +102,35 @@ int main() {
               printf("\n");  
           }                         
           
-          //msum=values[2];
-          if(operand=='+'){
-            //            rsum=values[0]+values[1];
+          msum=values[2];
+          if(operation=='+'){
+                        rsum=values[0]+values[1];
                         char rmsum[50];
                         sprintf(rmsum, "%.2f", msum);
                         msum = atof(rmsum);                        
                         if(msum==rsum){
-                          //printf("OK\n");
+                          printf("OK\n");
                         }
                         else{
-                          //printf("ZLE\n");
+                          printf("ZLE\n");
                         }
-                        //printf("%lf\n",rsum);
+                        printf("%lf\n",rsum);
           } 
-          else if(operand=='-'){
-              //          rsum=values[0]-values[1];
+          else if(operation=='-'){
+                       rsum=values[0]-values[1];
+                        char rmsum[50];
+                        sprintf(rmsum, "%.2f", msum);
+                        msum = atof(rmsum);
+                        if(msum==rsum){
+                          printf("OK\n");
+                        }
+                        else{
+                          printf("ZLE\n");
+                        }
+                        printf("%lf\n",rsum);
+          }
+          else if(operation=='*'){
+                        rsum=values[0]*values[1];
                         char rmsum[50];
                         sprintf(rmsum, "%.2f", msum);
                         msum = atof(rmsum);
@@ -151,37 +138,22 @@ int main() {
                           //printf("OK\n");
                         }
                         else{
-                          //printf("ZLE\n");
+                          printf("ZLE\n");
                         }
-                        //printf("%lf\n",rsum);
+                        printf("%lf\n",rsum); 
           }
-          else if(operand=='*'){
-                //        rsum=values[0]*values[1];
+          else if(operation=='/'){
+                        rsum=values[0]/values[1];
                         char rmsum[50];
                         sprintf(rmsum, "%.2f", msum);
                         msum = atof(rmsum);
                         if(msum==rsum){
-                          //printf("OK\n");
+                          printf("OK\n");
                         }
                         else{
-                          //printf("ZLE\n");
+                          printf("ZLE\n");
                         }
-                        //printf("%lf\n",rsum); 
+                        printf("%lf\n",rsum);
           }
-          else if(operand=='/'){
-                  //      rsum=values[0]/values[1];
-                        char rmsum[50];
-                        sprintf(rmsum, "%.2f", msum);
-                        msum = atof(rmsum);
-                        if(msum==rsum){
-                          //printf("OK\n");
-                        }
-                        else{
-                          //printf("ZLE\n");
-                        }
-                        //printf("%lf\n",rsum);
           }
-    free(input);
- 
-    return 0;
-}
+          }
\ No newline at end of file