字符串中字符在CL中的最后一次出现

char *strrchr(const char *str, int c)

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

int main() {
    char str[] = "Hello, World!";
    char *lastOccurrence = strrchr(str, 'o');
    
    if (lastOccurrence != NULL) {
        printf("The last occurrence of 'o' is at index %ld\n", lastOccurrence - str);
    } else {
        printf("The character 'o' is not found in the string.\n");
    }
    
    return 0;
}

The last occurrence of 'o' is at index 8