从 C 文件更改头文件中结构变量中的 char 数组会弄乱数组

Question

我有一个普通的 .c 文件，还有一个 .h 头文件。

这是我的 .c 文件代码的一部分，其中的注释解释了每一步的输出结果。这是在主要功能中:

FreqType freq;

    freq.andLiteral[0] = 'a';
    freq.andLiteral[1] = 'n';
    freq.andLiteral[2] = 'd';
    freq.andLiteral[3] = '\0';

    printf("%s\n", freq.andLiteral); //Outputs: and

    freq.theLiteral[0] = 't';
    printf("%s, ", freq.theLiteral); printf("%s\n", freq.andLiteral); //Outputs: t, and
    freq.theLiteral[1] = 'h';
    printf("%s, ", freq.theLiteral); printf("%s\n", freq.andLiteral); //Outputs: th, and
    freq.theLiteral[2] = 'e';
    printf("%s, ", freq.theLiteral); printf("%s\n", freq.andLiteral); //Outputs: the, and
    freq.theLiteral[3] = '\0';
    printf("%s, ", freq.theLiteral); printf("%s\n", freq.andLiteral); //Outputs: the, and

    freq.ofLiteral[0] = 'o';
    printf("%s, ", freq.ofLiteral); printf("%s, ", freq.theLiteral); printf("%s\n", freq.andLiteral);
    //Outputs: o, theo, and 
    freq.ofLiteral[1] = 'f';
    printf("%s, ", freq.ofLiteral); printf("%s, ", freq.theLiteral); printf("%s\n", freq.andLiteral);
    //Outputs: ofand, theofand, and
    freq.ofLiteral[2] = '\0';
    printf("%s, ", freq.ofLiteral); printf("%s, ", freq.theLiteral); printf("%s\n", freq.andLiteral);
    //Outputs: of, theof, 

这是我的 .h 头文件的相关部分:

typedef struct {
    char theLiteral[3];
    char ofLiteral [2];
    char andLiteral [3];
    int theCounter, ofCounter, andCounter;
} FreqType;

更改数组往往会相互混合的数组会出现什么问题？

Answer 1

您的字段声明太小。例如，theLiteral 需要允许 4 个字符，包括末尾的\0，因此您需要编写

char theLiteral[4]

等等。