Why is my implementation of strcmp not returning the proper value?
- by Avanish Giri
Why is this printing out 0 back in main but 6 when it is inside of the strcmp function?
7 int main()
8 {
9 char* str = "test string";
10 char* str2 = "test strong";
11 //printf("string length = %d\n",strlen(str));
12
13 int num = strcmp(str,str2);
14
15 printf("num = %d\n",num);
16 }
29 int strcmp(char* str, char* str2)
30 {
31 if(*str == '\0' && *str2 == '\0')
32 return 0;
33 if(*str2 - *str == 0)
34 {
35 strcmp(str+1,str2+1);
36 }
37 else
38 {
39 int num = *str2 - *str;
40 cout << "num = " <<num<<endl;
41 return num;
42 }
43 }
The output is:
num = 6
num = 0
Why is it printing 0 when obviously the value that it should be returning is 6?
