搞不懂

/* talkback.c -- 一个能为你提供信息的对话框 */#include <stdio.h>#include <string.h>/* 提供strlen()函数的原型 */#define DENSITY 62.4/* 人的密度（单位是：英镑/每立方英尺） */int main (void){float weight, volume;int size, letters;char name [40];/* name是一个有40个字符的数组 */printf ("Hi! What's your first name?\n");scanf ("%s", name);printf ("%s, what's your weight in pounds?\n", name);scanf ("%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 store it in.\n"，size);return 0;}---------------------------------------------------------------------------------gcc >>015.c: In function ‘main’:015.c:21:2: error: stray ‘\357’ in program015.c:21:2: error: stray ‘\274’ in program015.c:21:2: error: stray ‘\214’ in program015.c:21:53: error: expected ‘)’ before ‘size’015.c:21:53: warning: too few arguments for format