Char数组输出额外的字符

Question

您好,这是我的代码段,我正在尝试实现Morris-Pratt算法.当我比较我的变量时,如果发现它们不匹配,这是因为我的一个变量"Temp"正在将额外的字符添加到数组的末尾.这是我的代码......

        // Calculate the next talbe
        char test[searchLen];

        for(int i = 0; i < searchLen; i++)
        {   
            test[i] = fileContent[currPos+i];
        }

        cout << "SEARCHLEN: " << searchLen << endl;
        cout << "TEST: " << '\t' << '\t' << test << endl;
        cout << "SEARCH: " << '\t' << search << endl;
        cout << strcmp(test,search) << endl << endl;
        // Determine if a match is detected

        if(strcmp(test,search)==0)
        {
            cout << "----------------------> Match detected at: " << currPos << endl;
        }

        currPos ++;
    }

    return numberOfComparisons;
}

输出看起来像这样......

SEARCHLEN: 8
TEST:       athsoutg5?h
SEARCH:     brilling
-1

正如你所看到的那样5？H不应该在那里而且会破坏我的代码.

Answer 1

您需要添加一个空终止符.

   char test[searchLen + 1];
   test[searchLen] = '\0';