diff --git a/du4/program.c b/du4/program.c
index 67e39fb..ad71092 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -3,48 +3,83 @@
 #include <string.h>
 #include <ctype.h>
 
-char add(double A, double B, double C,char AC){
-	float CC=A+B;
-    if(CC==(float)C || A+B==C)return printf("OK\n");
-    return printf("ZLE\n"); 
+
+
+
+void add(double a, double b, double c,char ac, int result[],int count){
+    float cc=a+b;
+    if(cc==(float)c || a+b==c) result[count]=1;
+    else result[count]=2; 
 }
-char subtr(double A, double B, double C,char AC){
-    if(A-B==C)return printf("OK\n");
-    return printf("ZLE\n"); 
+
+double subtr(double a, double b, double c,char ac, int result[],int count){
+    if(a-b==c) result[count]=1;
+    else result[count]=2; 
 }
-char multi(double A, double B, double C,char AC){
-    if(A*B==C)return printf("OK\n");
-    return printf("ZLE\n"); 
+
+double multi(double a, double b, double c,char ac, int result[],int count){
+    if(a*b==c) result[count]=1;
+    else result[count]=2; 
 }
-char divi(double A, double B, double C,char AC){
-    float CC=A/B;
-    double Cc=(int)((A/B)*100000);
-    if(CC==C || A/B==C || Cc==(int)(C*100000))return printf("OK\n");
-    return printf("ZLE\n"); 
+
+double divi(double a, double b, double c,char ac, int result[],int count){
+    float cc=a/b;
+    double Cc=(int)((a/b)*100000);
+    if(Cc==c || a/b==c || cc==(int)(c*100000)) result[count]=1;
+    else result[count]=2; 
 }
 
+
 int main()
 {
 char *str;
-str=(char*)malloc(100);
- double a,b,c;
-char ac,el;
-int ind=0;
-for(int i=0;el!='\n';i++){
-    el=getchar();
-    if(isspace(el)){
-        continue;
+int *result;
+result=(int*)malloc(100);
+double a,b,c;
+char ac,el=0;
+int count=0;
+int eof;
+for(;eof!=EOF;count++){
+    str=(char*)malloc(20);
+    eof=scanf("%s",str);
+    int ind=0;
+    for(int i=0;i<strlen(str);i++){
+        if(isspace(str[i])){
+            continue;
+        }
+        str[ind]=str[i];
+        ind++;
     }
-    str[ind]=el;
-    ind++;
+    sscanf(str,"%lF%c%lF=%lF ",&a,&ac,&b,&c);
+    switch(ac){
+        case '+':
+            add(a,b,c,ac,result,count);
+            break;
+        case '-':
+            subtr(a,b,c,ac,result,count);
+            break;
+        case '*':
+            multi(a,b,c,ac,result,count);
+            break;
+        case '/':
+            divi(a,b,c,ac,result,count);
+            break;
+        default:
+            result[count]=3;
+    }
+    free(str);
 }
-sscanf(str,"%lF%c%lF=%lF ",&a,&ac,&b,&c);
-if(ac=='+')add(a,b,c,ac);
-else if(ac=='-')subtr(a,b,c,ac);
-else if(ac=='*')multi(a,b,c,ac);
-else if(ac=='/')divi(a,b,c,ac);
-else printf("CHYBA\n");
+    count--;
+    for(int j=0;j<count;j++){
+        if(result[j]==1) printf("OK\n");
+        if(result[j]==2) printf("ZLE\n");
+        if(result[j]==3) printf("CHYBA\n");
+    }
+
     return 0;
 }
 
 
+
+
+