C语言入门-结构体

 查询学生成绩：

#include <stdio.h>

#define N 2


struct teacher
{
	char id[11];
	char name[21];
	char gender;
	int age;
	char zc[11];
	char xl[7];
	char phone[12];
	float wage;
};


void show(struct teacher dep[], int n);

int main()
{
	struct teacher sx[N];

	int i;

	for(i = 0; i < N; i++)
	{
		scanf("%s%s" ,sx[i].id, sx[i].name);
		fflush(stdin);//
		scanf("%c" ,&sx[i].gender);
		scanf("%d%s%s%s%f" , &sx[i].age, sx[i].zc,
				sx[i].xl, sx[i].phone,&sx[i].wage);
	}

	show(sx, N);
	return 0;
}

void show(struct teacher dep[], int n)
{
	int i;
	/*
	char id[11];char name[21];char gender;int age;
	char zc[11];char xl[7];	char phone[12];	float wage;
	*/
	for(i = 0; i < n; i++)
		//显示
		printf("%s %s %c %d %s %s %s %.2f\n" ,dep[i].id, dep[i].name, dep[i].gender,
				dep[i].age, dep[i].zc,dep[i].xl, dep[i].phone,
				dep[i].wage);
}

#include <stdio.h>
#include <string.h>//用字符串中的strlen，strcmp，strcpy等需要头文件
#define N 2

void input(char no[ ][11],char name[][21],int age[],
		float c_score[ ], float math[], float english[], int n);
void output(char no[ ][11],char name[][21],int age[],
		float c_score[ ], float math[], float english[], int n);
int find(char name[][21], int n, char fname[]);
void total(char no[ ][11],char name[][21],int age[],
		float c_score[ ],  int n);
int main()
{
	char no[N][11];
	char name[N][21];
	int age[N];
	float c_score[N];
	float math[N];
	float english[N];
	char fname[21];
	int result;

	input( no ,name, age,c_score, math, english, N);
	output( no ,name, age,c_score, math, english, N);

	fflush(stdin);
	gets(fname);

	result = find(name, N, fname);
	if(result < 0)
		printf("查无此人\n");
	else
	output( no+result,name + result, 
			age  + result,c_score + result, 
			math + result, english + result, 1);
	
	 total( no, name, age,
		c_score,  N);


	return 0;
}

void input(char no[ ][11],char name[][21],int age[],
		float c_score[ ], float math[], float english[], int n)
{

	int i;

	for(i = 0; i < n; i++)
	{
		printf("请输入学号: ");
		fflush(stdin);
		gets(no[i]);
		printf("请输入姓名: ");
		fflush(stdin);
		scanf("%s", name[i]);

		printf("请输入年龄: ");	
		scanf("%d", &age[i]);
		printf("请输入C语言成绩: ");	
		scanf("%f", &c_score[i]);
		printf("请输入高等数学成绩: ");	
		scanf("%f", &math[i]);
		printf("请输入英语成绩: ");	
		scanf("%f", &english[i]);
	}

}
void output(char no[ ][11],char name[][21],int age[],
		float c_score[ ], float math[], float english[], int n)
{
	int i;

	for(i = 0; i < n; i++)
	{
		printf("%-14s%-22s%-4d%-7.1f%-7.1f%-7.1f\n", no[i], name[i], age[i],
				c_score[i], math[i], english[i]);
	}

}

//返回值是该学生的位置
int find(char name[][21], int n, char fname[])
{
	int i;

	for(i = 0; i < n; i++)
	{
		if(0 == strcmp(name[i],fname))
			return i;
	}

	return -1;
}

void total(char no[ ][11],char name[][21],int age[],
		float c_score[ ],  int n)
{
	int i;
	printf("\n优(成绩>=90)的学生为：\n");
	for (i = 0; i<N; i++)
	{
		if (c_score[i] >= 90)
		{
			printf("%-10d",no[i]);
			printf("5-16d",name[i]);
			printf("%-4d",age[i]);
			printf("%-6.0f",c_score[i]);
			printf("\n");

		}
	}
	printf("\n良(80<=成绩<90)的学生: \n");
	for (i=0;i<N;i++)
	{
		if(c_score[i]>=80 && c_score[i] < 90)
		{
			printf("%-10ld",no[i]);
			printf("%-16s", name[i]);
			printf("%-4d",age[i]);
			printf("%-6.0f", c_score[i]);
			printf("\n");
		}
	}

}