diff --git a/du4/program.c b/du4/program.c
index af71f2a..3e4da79 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -3,36 +3,38 @@
 #include <string.h>
 #include <ctype.h>
 
-int call(float A, float B, float C, char AC){
-    if(AC=='/'&&B==0||AC==('+'||'-'||'*'||'-')){
+int call(long double A, long double B, long double C, char AC){
+    if(AC=='/'&&B==0 || AC==('+'||'-'||'*'||'-')){
         return printf("CHYBA\n");
     }
     else if(AC=='+'){
         if(A+B==C)return printf("OK\n");
         return printf("ZLE\n");
     }
-    else if(AC=='-'){
+    if(AC=='-'){
         if(A-B==C)return printf("OK\n");
         return printf("ZLE\n");
     }
-    else if(AC=='*'){
+    if(AC=='*'){
         if(A*B==C)return printf("OK\n");
         return printf("ZLE\n");
     }
     if(AC=='/'){
-        float Cc=A/B;
+        long double Cc=A/B;
         Cc=(int)(Cc*100000);
         Cc=(float)Cc/100000;
-        if(Cc==C)return printf("OK\n");
+        if(Cc==C || A/B==C)return printf("OK\n");
+//        printf("%Lf",Cc);
         return printf("ZLE\n");
     }
-    return printf("CHYBA");
+    return printf("CHYBA\n");
 }
+
 int main()
 {
 char *str;
 str=(char*)malloc(100);
-float a,b,c;
+long double a,b,c;
 char ac,el;
 int ind=0;
 for(int i=0;el!='\n';i++){
@@ -43,7 +45,11 @@ for(int i=0;el!='\n';i++){
     str[ind]=el;
     ind++;
 }
-sscanf(str,"%f%c%f=%f ",&a,&ac,&b,&c);
+//3␣/␣45␣=␣0.06666↵
+//scanf("%s",str);
+sscanf(str,"%Lf%c%Lf=%Lf ",&a,&ac,&b,&c);
+//printf("\n%f %c %f =%f ",a,ac,b,c);
 call(a,b,c,ac);
     return 0;
 }
+