Thread: c equal string

i made my own function to search if two given strins in my function are equal but the problem is if i pass two variable like hello,hello
result is string equal but if i pass hello , gello also give me string equal because last 4 characters same to last 4 characters of hello how i can solve this problem thanks very much

Code:

int getSimilarityOfTwoStrings(const char str1[],const char str2[]){
    int str1Len = getStringLength(str1);
    int str2Len = getStringLength(str2);
    int i = 0;
    int j = 0;
    bool truefalse;
    if(str1Len > str2Len || str2Len > str1Len || str1Len < str2Len || str2Len < str1Len){
        truefalse = false;
        exit(EXIT_FAILURE);
    }else{
        for(i = 0; i < str1Len; i++){
            if(tolower(str1[i]) == tolower(str2[j++])){
              truefalse = true;
            }else{
              truefalse = false;
            }
        }
    }


    return truefalse;
}

You are overwriting your bool value truefalse. If your strings differ on the first character, why continue checking?

Also, line 7 could be written with the "not equal to" operator in your function.

ok i change my line to str1len != str2len or str2len != str1len and also i use break into if to stop overwriting in this way works . but my question when we use c function strcmp they check all words or also they check first character into string ? thanks very much