printf请输入一句以感叹号结尾的英文句子 ; scanfc&p;

There seems to be a mistake in your code. The variable 'p' should be declared as a character array or string to store the input sentence. Here's the corrected code:

#include <stdio.h>

int main() {
    char sentence[100];
  
    printf("请输入一句以感叹号结尾的英文句子: ");
    scanf("%[^\n]s", sentence);

    // Check if the sentence ends with an exclamation mark
    if (sentence[strlen(sentence) - 1] == '!') {
        printf("输入的句子正确！\n");
    } else {
        printf("输入的句子不以感叹号结尾！\n");
    }

    return 0;
}

This code prompts the user to enter a sentence and then checks if the sentence ends with an exclamation mark. The result is printed accordingly