Question

How to reverse a word in a string with C

Answer 1

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

void reverseWord(char *str, const char *word) {
    char *pos = strstr(str, word);
    
    if (pos != NULL) {
        int len = strlen(word);
        for (int i = 0; i < len / 2; ++i) {
            char temp = pos[i];
            pos[i] = pos[len - i - 1];
            pos[len - i - 1] = temp;
        }
    }
}

int main() {
    char str[] = "C++ C Java Python PHP C#";
    const char word[] = "Java";

    reverseWord(str, word);

    printf("%s\n", str);
    
    return 0;
}



/*
run:

C++ C avaJ Python PHP C#

*/

 

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