diff --git a/du3/program.c b/du3/program.c
index 8c12b23..e786b5e 100644
--- a/du3/program.c
+++ b/du3/program.c
@@ -73,15 +73,15 @@ int main()
                     switch (writeIntoArrayNum)
                     {
                         case 1:
-                        strncat(num1Temp, i, 1);
+                        strncat(num1Temp, strBuffer[i], 1);
                         break;
 
                         case 2:
-                        strncat(num2Temp, i, 1);
+                        strncat(num2Temp, strBuffer[i], 1);
                         break;
 
                         case 3:
-                        strncat(resultTemp, i, 1);
+                        strncat(resultTemp, strBuffer[i], 1);
                         break;
                     }
                     continue;
@@ -91,7 +91,7 @@ int main()
                 {
                     //ak je to nejaky printable symbol ('*/-,:./), skontroluj ci to nie je artimeticke znamienko alebo desatinna bodka,
                     //AK NIE, povazuj za riadok neplatny...
-                    if (strBuffer[i] == '+' || strBuffer[i] == '-' || strBuffer[i] == '/' strBuffer[i] == '*')
+                    if (strBuffer[i] == '+' || strBuffer[i] == '-' || strBuffer[i] == '/' || strBuffer[i] == '*')
                     {
                         op1 = i;
                     }