[置顶] C语言项目教师信息/学生成绩管理系统

这个系统实现两个功能，分别是管理教师的信息和学生的成绩，用户可以选择切换实现相应的功能。话不多说了，现在看下程序的实现截图：

这里给出程序代码下载地址：http://download.csdn.net/detail/dlutbrucezhang/5191828

下面贴出部分代码：

void add_tea(Teacher tea[]) 
{ 
	int i=0,j,num; 
	char str[5]; 
	if(numtea!=0) 
	{ 
		printf("cover the current record?(y/n)\n"); 
		gets(str); 
		if(str[0]=='Y'||str[0]=='y') 
			i=0; 
		else i=numtea; 
	} 

	printf("Please input the number of you add the teachers:"); 
	scanf("%d",&num); 
	if(i==0) 
		numtea=num; 
	else numtea+=num; 
	if(numtea>lens) 
	{ 
		lens+=10; 
		tea=(Teacher *)realloc(tea,lens*SIZE); 
	} 
	printf("Please input the teacher's info:\n"); 
	for(;i<numtea;i++) 
	{ 
		getchar(); 
		printf("please input the teacher's NO.:"); 
		gets(tea[i].number); 
		printf("please input the teacher's name:"); 
		gets(tea[i].name); 
		printf("please input the teacher's sex(man/woman 0/1):"); 
		gets(tea[i].sex); 
		if(tea[i].sex[0]=='0') strcpy(tea[i].sex,"man"); 
		else strcpy(tea[i].sex,"woman"); 
		printf("please input the teacher's address:"); 
		gets(tea[i].addr); 
		printf("the teacher is married(No/Yes 0/1):"); 
		gets(tea[i].married); 
		if(tea[i].sex[0]=='0') strcpy(tea[i].sex,"No"); 
		else strcpy(tea[i].sex,"Yes"); 
	} 
	display_tea(tea,0,numtea-1); 
	getchar(); 
}
void display_tea(Teacher tea[],int n1,int n2) 
{ 
	int i;
	char str[2];
	if(numtea==0){
	       printf("There is Nothing!\n");
		   printf("Do you want to open some file to find the record?(Y/N)\n");
		   gets(str);
		   if (str[0]=='Y'||str[0]=='y')
		   {
			   openfileTXT(tea);
		   }
		   else
		   {
			   return;
		   }
	}
	else
	{
		for(i=n1;i<=n2;i++) 
			printf("number:%s\tname:%s\t\tsex:%s\t\taddr:%s\t\tmarried:%s\t",tea[i].number,tea[i].name,tea[i].sex,tea[i].addr,tea[i].married); 
	}
} 
void adjust(Teacher tea[]) 
{ 
	char str[5]; 
	int i=-1,j; 

	if(numtea==0) 
	{
		printf("there is nothing !!!\n"); 
		return;
	}
	while(i<0) 
	{ 
		i=find_tea(tea); 
		if(i>=0) 
		{ 
			printf("Delete it?(y/n)"); 
			gets(str); 
			if(str[0]=='y'||str[0]=='Y') 
			{ 
				delete_tea(tea,i); 
				/*count(stud); */
			} 
			else 
			{ 
				printf("Adjust it?(y/n)"); 
				gets(str); 
				if(str[0]=='y'||str[0]=='Y') 
				{ 

					printf("Please input something you want:\n"); 
					printf("please input the teacher's NO.:"); 
					gets(tea[i].number); 
					printf("please input the teacher's name:"); 
					gets(tea[i].name); 
					printf("please input the teacher's sex(man/woman 0/1):"); 
					gets(tea[i].sex); 
					if(tea[i].sex[0]=='0') strcpy(tea[i].sex,"man"); 
					else strcpy(tea[i].sex,"woman"); 
					printf("please input the teacher's address:"); 
					gets(tea[i].addr); 
					printf("the teacher is married(No/Yes 0/1):"); 
					gets(tea[i].married); 
					if(tea[i].sex[0]=='0') strcpy(tea[i].sex,"No"); 
					else strcpy(tea[i].sex,"Yes"); 
				} 
				/*count(stud); */
			} 
			display_tea(tea,0,numtea-1); 
		} 
		printf("Again to Adjust it ?(y/n)\n"); 
		gets(str); 
		if(str[0]=='y'||str[0]=='Y') 
			i=-1; 
		else i=1; 
	} 
} 

int find_tea(Teacher tea[]) 
{ 
	char str[10]; 
	int i; 
	if(numtea==0) 
	{ 
		printf("There is nothing\n"); 
		return -1; 
	} 
	else 
	{ 
		printf("what do you want your fashion ?\n1.number\t2.name\t3.addr\n"); 
		gets(str); 
		if(str[0]=='1') 
		{ 
			printf("please input the teacher's number:"); 
			gets(str); 
			for(i=0;i<=numtea;i++) 
				if(strcmp(str,tea[i].number)==0) 
				{ 
					display_tea(tea,i,i); 
					break; 
				} 
				else continue; 
		} 
		else if(str[0]=='2') 
		{ 
			printf("please input the teacher's name:"); 
			gets(str); 
			for(i=0;i<=numtea;i++) 
				if(strcmp(str,tea[i].name)==0) 
				{ 
					display_tea(tea,i,i); 
					break; 
				} 
				else continue; 
		} 
		else if(str[0]=='3') 
		{ 
			printf("please input the teacher's address:"); 
			gets(str);
			for(i=0;i<=numtea;i++) 
				if(strcmp(str,tea[i].addr)==0) 
				{ 
					display_tea(tea,i,i); 
					break; 
				} 
				else continue; 
		} 
		if(i>numtea) 
		{ 
			printf("Nothing has find\n"); 
			return -1; 
		} 
		return i; 
	} 
} 

void delete_tea(Teacher tea[],int i) 
{ 
	int j; 
	while(i>=0) 
	{ 
		for(j=i;j<numtea;j++) 
			tea[j]=tea[j+1]; 
		numtea--; 
		printf("Delete Success!\n"); 
	} 
} 

int writetoTXT(Teacher tea[]) 
{ 
	int i=0,j; 
	FILE *fp; 
	char filename[20]; 
	printf("Please input the file's name:"); 
	gets(filename); 
	fp=fopen(filename,"w"); 
	fprintf(fp,"%d\n",numtea); 
	while(i<numtea) 
	{ 
		fprintf(fp,"%s %s %s %s %s",tea[i].number,tea[i].name,tea[i].sex,tea[i].addr,tea[i].married); 
		i++; 
	} 
	fclose(fp); 
	printf("Save success!!!\n"); 
	display_tea(tea,0,numtea-1); 
	numtea=0; 
	return 0; 
} 

int openfileTXT(Teacher tea[]) 
{ 
	int i=0,j; 
	FILE *fp; 
	char filename[20],str[2]; 
	if(numtea!=0) 
	{ 
		printf("There has some records,Do you want to save them?(y/n)"); 
		gets(str); 
		if(str[0]=='y'||str[0]=='Y') 
			writetoTXT(tea); 
	} 
	printf("Please input the file name:"); 
	gets(filename); 
	numtea=0; 
	if((fp=fopen(filename,"rb+"))==NULL) 
	{ 
		printf("Sorry ,can't open the file\n"); 
		return(-1); 
	} 
	fscanf(fp,"%d",&numtea); 
	fgetc(fp); 
	while(i<numtea) 
	{ 
		fscanf(fp,"%s",&tea[i].number); 
		fscanf(fp,"%s",&tea[i].name); 
		fscanf(fp,"%s",&tea[i].sex); 
		fscanf(fp,"%s",&tea[i].addr); 
		fscanf(fp,"%s",&tea[i].married); 
		i++; 
	} 
	fclose(fp); 
	printf("Read the file success\n"); 
	printf("Display the record ?(y/n)"); 
	gets(str); 
	if(str[0]=='y'||str[0]=='Y') 
		display_tea(tea,0,numtea-1); 
	return(0); 
} 

void displayTheSystemInfo() 
{ 
	printf("\t\t制作人员: \n\n"); 
	printf("\t\t张虎（BruceZhang）\n"); 
	printf("\n\n"); 
}