diff --git a/src/inputHandling.c b/src/inputHandling.c
index c8191f1..54ceecf 100644
--- a/src/inputHandling.c
+++ b/src/inputHandling.c
@@ -6,11 +6,11 @@
 
 char formulaBuffer[1000];
 
-void processInput(char* formulaString, int length) {
-    deleteWhitespace(formulaString, length);
+void processInput(char* formStr, int length) {
+    deleteWhitespace(formStr, length);
     calc_op temp;
-    memcpy(formulaBuffer, formulaString, length);
-    temp.formular = formulaString;
+    memcpy(formulaBuffer, formStr, length);
+    temp.formular = formStr;
     temp.functionsType = detectFunctionOperator(formulaBuffer, 10);
     if (getNumbers(formulaBuffer, length, &temp) == NULL){
         showStruct(&temp);
@@ -20,11 +20,11 @@ void processInput(char* formulaString, int length) {
 }
 
 //Leerzeichen löschen
-void deleteWhitespace(char* formulaString, int length){
+void deleteWhitespace(char* formStr, int length){
     for(int stringPos=0; stringPos < length; stringPos++){
-        if((formulaString[stringPos] == ' ') || (formulaString[stringPos] == '\n') || (formulaString[stringPos] == '\r')){
+        if((formStr[stringPos] == ' ') || (formStr[stringPos] == '\n') || (formStr[stringPos] == '\r')){
             for (int j=stringPos; j < length; j++){
-                formulaString[j]=formulaString[j + 1];
+                formStr[j]=formStr[j + 1];
             }
             stringPos--;
         }
@@ -32,9 +32,9 @@ void deleteWhitespace(char* formulaString, int length){
 }
 
 //Einfachste Rechenoperationen lesen
-op detectFunctionOperator(char* formulaString, int length){
+op detectFunctionOperator(char* formStr, int length){
     for(int stringCount=0; stringCount < length; stringCount++){
-        switch (formulaString[stringCount]){
+        switch (formStr[stringCount]){
             case '+': return opAdd;
             case '-': return opSub;
             case '/':case ':': return opDiv;
@@ -47,7 +47,7 @@ op detectFunctionOperator(char* formulaString, int length){
 }
 
 //Zahlen auslesen (+)
-char* getNumbers(char* formulaString, int length, calc_op* formulaRef){ //processInput sind: string, länge vom String, berechnungsstruct
+char* getNumbers(char* formStr, int length, calc_op* formulaRef){ //processInput sind: string, länge vom String, berechnungsstruct
     // char tmp[length];
     char* splitPnt;
     int numPos = 0;
@@ -67,8 +67,8 @@ char* getNumbers(char* formulaString, int length, calc_op* formulaRef){ //proces
             break;
         default: return NULL;
     }
-    // memcpy(tmp, formulaString, length);     //string kopiert
-    char *token = strtok(formulaString, &delimiter); //An der Stelle von dem ersten Plus wird ein NULL (Stringende) gesetzt
+    // memcpy(tmp, formStr, length);     //string kopiert
+    char *token = strtok(formStr, &delimiter); //An der Stelle von dem ersten Plus wird ein NULL (Stringende) gesetzt
     while (token != NULL) {
         formulaRef->inputNumbers[numPos] = atof(token);  // String zu double konvertiert
         numPos++;
@@ -84,9 +84,9 @@ char* getNumbers(char* formulaString, int length, calc_op* formulaRef){ //proces
     }
 }
 
-void showStruct(calc_op* formulaRef){
-    printf("\nBerechnung: %s\n", formulaRef->formular);
-    switch (formulaRef->functionsType) {
+void showStruct(calc_op* formRef){
+    printf("\nBerechnung: %s\n", formRef->formular);
+    switch (formRef->functionsType) {
         case opAdd:
             printf("Rechenoperation: Addition\n"); break;
         case opSub:
@@ -99,8 +99,8 @@ void showStruct(calc_op* formulaRef){
             printf("Fehler bei Auswahl der Rechenoperationen \n");
     }
     printf("Calculation Variables:\n");
-    for (int arrayCount = 0; arrayCount < formulaRef->arrayLength; ++arrayCount) {
-        printf("Array[%i] = %f\n", arrayCount, formulaRef->inputNumbers[arrayCount]);
+    for (int arrayCount = 0; arrayCount < formRef->arrayLength; ++arrayCount) {
+        printf("Array[%i] = %f\n", arrayCount, formRef->inputNumbers[arrayCount]);
     }
-    printf("Result: %f\n", formulaRef->result);
+    printf("Result: %f\n", formRef->result);
 }
\ No newline at end of file
diff --git a/src/inputHandling.h b/src/inputHandling.h
index 9af608f..ca9e2fa 100644
--- a/src/inputHandling.h
+++ b/src/inputHandling.h
@@ -15,11 +15,11 @@ void* parent;
 double result;
 }calc_op;
 
-extern void processInput(char* formulaString, int length);
-extern void showStruct(calc_op* formulaRef);
-extern void deleteWhitespace(char* formulaString, int length);
-extern op detectFunctionOperator(char* formulaString, int length);
-extern char* getNumbers(char* formulaString, int length, calc_op* formulaRef);
-extern void showStruct(calc_op* formulaRef);
+extern void processInput(char* formStr, int length);
+extern void showStruct(calc_op* formRef);
+extern void deleteWhitespace(char* formStr, int length);
+extern op detectFunctionOperator(char* formStr, int length);
+extern char* getNumbers(char* formStr, int length, calc_op* formulaRef);
+extern void showStruct(calc_op* formRef);
 
 #endif // INPUTHANDLING_H