一道C语言程序题求解⁄(⁄ ⁄•⁄ω⁄•⁄ ⁄)⁄

上面是结果，下面是代码，望采纳~


#include
#include
#include


#define book_max 5


struct book
{
char ISN[3];
int n_ini;
int n_in;
int n_out;
}book1[book_max];


void main()
{
int i,j=1;
char Isn[3];
printf("请录入所有书的信息：\n");
for(i=0;i scanf("%s%d%d%d",&book1[i].ISN,&book1[i].n_ini,&book1[i].n_in,&book1[i].n_out);
}
printf("请输入查询书号：\n");
while(j<=3){
scanf("%s",Isn);
for(i=0;i if(strcmp(Isn,book1[i].ISN)==0)
printf("%s:\n%d\n",Isn,book1[i].n_ini+book1[i].n_in-book1[i].n_out);
}
j++;
}


system("pause");
}

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