C语言实现商品价格查询系统？
#include<stdio.h>
#include<string.h>
#define N 20
struct shop{
char name[10];
float pri;
}a[N];
void inputa(int n,int n0){
for(int i=n-n0;i<n;i++){
printf("请输入品名 价格
") ;
scanf("%s%f",&a[i].name,&a[i].pri);
}
}
void change(char s[],int n){
for(int i=0;i<n;i++){
if(!strcmp(s,a[i].name)){
printf("改价格：");
scanf("%f",&a[i].pri);
break;
}
else printf("未找到！");
}
}
void find(char s[],int n){
for(int i=0;i<n;i++){
if(!strcmp(s,a[i].name)){
printf("%d%s%.2f
",i+1,a[i].name,a[i].pri);
break;
}
else printf("未找到！");
}
}
void outa(int n){
for(int i=0;i<n;i++){
printf("%d%s%.2f
",i+1,a[i].name,a[i].pri);
}
}
void del(char s[],int n){
for(int i=0;i<n-1;i++){
if(!strcmp(s,a[i].name))
while(i<n-1){
a[i]=a[i+1];++i;
}
else printf("未找到！");
}
}
int main(){
int t=1,n=0,n0=0;
char s[10];
while(t){
printf("1 增加记录
2 修改价格
3 删除记录
4 查询商品
5 查看全部
0 退出系统
");
scanf("%d",&t);
if(t<1)break;
switch(t){
case 1:
printf("增加记录条数？");
scanf("%d",&n0);
n+=n0;
inputa(n,n0);
break;
if(n<1) break;
case 2: printf("输入品名：");
scanf("%s",s);
change(s,n);
break;
case 3: printf("输入品名：");
scanf("%s",s);
del(s,n);
n--;
break;
case 4:
printf("输入品名：");
scanf("%s",s);
find(s,n);
break;
case 5:
outa(n);
break;
}
}
return 0;
}
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