bug fix: the behaviour of the function power() for 0 to the power of 0 and and for an exponent with the value 0 for any positive base in the range of the data type is not undefined anymore.

src/stringManipulation.c

@@ -55,6 +55,9 @@ char *to_string(int number)
 }
 
 unsigned int power(unsigned int b, unsigned int n){
+	if(b==0&&n==0) return 0;
+	else if(b>=1&&n==0) return 1;
+	else{
 	unsigned int result = 1, ctr = 0;
 	while(ctr<n){
 		result *= b;
@@ -62,6 +65,7 @@ unsigned int power(unsigned int b, unsigned int n){
 	}
 	return result;
 	}
+}
 
 unsigned int toUnsignedInteger(char *ID)
 {

test/test_StringManipulation.c

@@ -43,7 +43,7 @@ void test_power()
 	/*test block 5*/
 	int testValues_5[] = {0,0,19,2,4,5,11,54,32,12,77};
 	int exponents[] = {0,1,2,7,4,2,0,1,2,4,2};
-	int expectedValues_5[] = {-1, 1, 361,128,256,25,1,54,1024,20736,5929};
+	int expectedValues_5[] = {0, 0, 361,128,256,25,1,54,1024,20736,5929};
 	length = sizeof(testValues_5)/sizeof(int);
 	for(int i=0;i<length;++i){
 		TEST_ASSERT_EQUAL_INT(expectedValues_5[i], power(testValues_5[i],exponents[i]));