change temp formular struct to pointer

src/inputHandling.c

@@ -5,17 +5,21 @@
 
 
 char formulaBuffer[1000];
+calc_op* mainCalc = NULL;
 
 void processInput(char* formStr, int len) {
     deleteWhitespace(formStr, len);
-    calc_op temp;
+    if (mainCalc!=NULL){
+        free(mainCalc);
+    }
+    mainCalc = malloc(sizeof(calc_op));
     memcpy(formulaBuffer, formStr, len);
-    temp.formular = formStr;
-    temp.functionsType = detectFunctionOperator(formulaBuffer, 10);
-    if (getNumbers(formulaBuffer, len, &temp) == NULL){
-        showStruct(&temp);
+    mainCalc->formular = formStr;
+    mainCalc->functionsType = detectFunctionOperator(formulaBuffer, 10);
+    if (getNumbers(formulaBuffer, len, mainCalc) == NULL){
+        showStruct(mainCalc);
     } else {
-        printf("Formular %s not supported", temp.formular);
+        printf("Formular %s not supported", mainCalc->formular);
     }
 }