先貼代碼

#include <stdio.h>
#include <string.h>        //提供strlen()函數(shù)的原型
#define DENSITY 62.4    //人的密度（單位是：英鎊/每立方英尺）

int main()
{
    float weight, volume;    //重量，密度
    int size, letters;
    char name[40]; //name是一個(gè)有40個(gè)字符的數(shù)組

    printf("Hi,what's your first name?\n");
    scanf_s("%s", name);
    printf("%s,what's your weight in pounds?\n", name);
    scanf_s("%f", &weight);
    size = sizeof name;
    letters = strlen(name);
    volume = weight / DENSITY;
    printf("well,%s,your volume is %2.2f cubic feet.\n", name, volume);
    printf("Also,your first name has %d letters.\n", letters);
    printf("and we have %d bytes to score it in\n", size);

    getchar();

    return 0;
}

程序運(yùn)行到第二個(gè)printf語(yǔ)句時(shí)出現(xiàn)錯(cuò)誤，給出的提示如下：

請(qǐng)問(wèn)是什么原因？