diff --git a/du4/program.c b/du4/program.c
index ad71092..cb5479c 100644
--- a/du4/program.c
+++ b/du4/program.c
@@ -12,17 +12,17 @@ void add(double a, double b, double c,char ac, int result[],int count){
     else result[count]=2; 
 }
 
-double subtr(double a, double b, double c,char ac, int result[],int count){
+void subtr(double a, double b, double c,char ac, int result[],int count){
     if(a-b==c) result[count]=1;
     else result[count]=2; 
 }
 
-double multi(double a, double b, double c,char ac, int result[],int count){
+void multi(double a, double b, double c,char ac, int result[],int count){
     if(a*b==c) result[count]=1;
     else result[count]=2; 
 }
 
-double divi(double a, double b, double c,char ac, int result[],int count){
+void 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;
@@ -40,15 +40,16 @@ char ac,el=0;
 int count=0;
 int eof;
 for(;eof!=EOF;count++){
-    str=(char*)malloc(20);
-    eof=scanf("%s",str);
+    eof=0;
+    str=(char*)malloc(100);
     int ind=0;
-    for(int i=0;i<strlen(str);i++){
-        if(isspace(str[i])){
-            continue;
+    for(int i=0;eof!='\n';i++){
+        eof=getchar();
+        if(eof==EOF) break;
+        if(eof!=' '){
+            str[ind]=eof;
+            ind++;
         }
-        str[ind]=str[i];
-        ind++;
     }
     sscanf(str,"%lF%c%lF=%lF ",&a,&ac,&b,&c);
     switch(ac){
@@ -77,9 +78,4 @@ for(;eof!=EOF;count++){
     }
 
     return 0;
-}
-
-
-
-
-
+}
\ No newline at end of file