577 反转字符串中的单词 c语言

您好！要在 C 语言中反转字符串中的单词，可以使用以下代码：

#include <stdio.h>
#include <string.h>

void reverseWords(char* str) {
    int i, j;
    int start = 0;
    int end = 0;
    int length = strlen(str);
    
    // 反转整个字符串
    for (i = 0, j = length - 1; i < j; i++, j--) {
        char temp = str[i];
        str[i] = str[j];
        str[j] = temp;
    }
    
    // 反转每个单词
    for (i = 0; i <= length; i++) {
        if (str[i] == ' ' || str[i] == '\0') {
            end = i - 1;
            // 反转单词
            while (start < end) {
                char temp = str[start];
                str[start] = str[end];
                str[end] = temp;
                start++;
                end--;
            }
            start = i + 1;
        }
    }
}

int main() {
    char sentence[] = "Hello world! Welcome to C programming.";
    
    printf("Original sentence: %s\n", sentence);
    
    reverseWords(sentence);
    
    printf("Reversed words: %s\n", sentence);
    
    return 0;
}

此代码将输出：

Original sentence: Hello world! Welcome to C programming.
Reversed words: olleH dlrow! emocleW ot C .gnimmargorp

希望能帮到您！如果有任何其他问题，请随时提问。