一道C++问题,求解答

一道c语言编程题求大神解答，找一下我错在哪了，谢谢了？

C语言编程问题求解答

按照题目要求编写的C语言程序如下

第9题

#include

int main(){

int i,j,N;

scanf("%d",&N);

for(i=1;i<=N;i++){

for(j=1;j<=N-i;j++){

printf(" ");

}

for(j=1;j<=2*i-1;j++){

printf("*");

}

printf("\n");

}

return 0;

}

第11题

#include

int main(){

int i,j;

for(i=0;i<=9;i++){

if(i==0){

printf("*");

for(j=1;j<=9;j++){

printf("%3d",j);

}

}else{

printf("%d",i);

for(j=1;j

printf("%3c",' ');

}

for(j=i;j<=9;j++){

printf("%3d",i*j);

}

}

printf("\n");

}

return 0;

}

一道c语言问题，求解答，谢谢

#include
#include
#include
#defineMAX50
typedefstruct{
	intxh;//学生学号、姓名和考试成绩
	charna[MAX];
	floatcj;
}datatype;
typedefstructNode{
	datatypedata;
	structNode*next;
}Seqlist;
voidprint(Seqlist*l);
voidinitList(Seqlist*lp);/*置一个空表*/
voidcreateList(Seqlist*lp,charstrname[]);/*建立成绩顺序表*/
voidsave(Seqlist*lp,charstrname[]);/*保存学生顺序表到指定文件*/
voidsort_cj(Seqlist*lp);/*降序排序*/
voidaverage(Seqlist*lp);/*算平均分并写入文件*/
voidbandscore(Seqlist*lp);/*划分分数段及写入*/
voidchangescore(Seqlist*lp,Seqlist*bk);/*修改成绩*/
intmain()
{
	Seqlistlp,bk;
	initList(&lp);initList(&bk);
	createList(&lp,"score.dat");
	createList(&bk,"bk.dat");
	sort_cj(&lp);
	save(&lp,"result.dat");
	average(&lp);
	bandscore(&lp);
	changescore(&lp,&bk);
	sort_cj(&lp);
	save(&lp,"result.dat");
	return0;
}
/*置一个空表*/
voidinitList(Seqlist*lp)
{
	lp->next=0;
	lp->data.xh=0;
	lp->data.na[0]='\0';
	lp->data.cj=0;
}
voidprint(Seqlist*l){
	Seqlist*p=l->next;
	while(p)
	{
		printf("%d%s%f\n",p->data.xh,p->data.na,p->data.cj);
		p=p->next;
	}
}
/*建立成绩顺序表*/
voidcreateList(Seqlist*lp,charstrname[])
{
	FILE*fp;
	intxh;
	floatcj;
	Seqlist*p,*tail=lp;
	if((fp=fopen(strname,"rb"))==NULL)
	{
		printf("fileopenerror\r\n");
		exit(0);
	}
	while(!feof(fp))
	{
		p=(Seqlist*)malloc(sizeof(Seqlist));
		fscanf(fp,"%d%s%f",&p->data.xh,p->data.na,&p->data.cj);
		tail->next=p;
		tail=p;
		
	}tail->next=NULL;
	print(lp);
	fclose(fp);
}
/*降序排序*/
voidsort_cj(Seqlist*head)
{
	Seqlist*tail=NULL;
	while(tail!=head->next)
	{
		Seqlist*pre=head;
		Seqlist*cur=pre->next;
		while(cur!=tail&&cur->next!=tail)
		{
			if(cur->data.cjnext->data.cj)
			{
				//交换当前节点和后一个节点
				pre->next=cur->next;
				cur->next=cur->next->next;
				pre->next->next=cur;
			}
			pre=pre->next;
			cur=pre->next;
		}
		tail=cur;
	}
}
/*保存学生顺序表到文件(追加)*/
voidsave(Seqlist*l,charstrname[])
{
	FILE*fp;
	Seqlist*lp=l->next;
	inti;
	if((fp=fopen(strname,"ab"))==NULL)
	{
		printf("fileopenerror\r\n");
		exit(0);
	}
	while(lp){
		fprintf(fp,"%d%s%.2f\r\n",lp->data.xh,lp->data.na,lp->data.cj);
	lp=lp->next;
	}
	fprintf(fp,"\r\n");
	fclose(fp);
}
/*算平均分并写入文件*/
voidaverage(Seqlist*l)
{
	FILE*fp;
	inti,num=0;
	Seqlist*lp=l->next;
	floats=0,a;
	while(lp){
		num++;
		s+=lp->data.cj;
		lp=lp->next;
		}
	if(num)
	a=s/num;
	if((fp=fopen("result.dat","ab"))==NULL){
		printf("fileopenerror\r\n");
		exit(0);
	}
	fprintf(fp,"平均分为%.2f\r\n",a);
	fprintf(fp,"\r\n");
	fclose(fp);
}
/*分数段及写入*/
voidbandscore(Seqlist*l)
{
	FILE*fp;
	if((fp=fopen("result.dat","ab"))==NULL){
		printf("fileopenerror\r\n");
		exit(0);
	}
	Seqlist*lp=l->next;
	inti,a=0,q=0,w=0,e=0,r=0,t=0,y=0;
	while(lp){
		
		a=lp->data.cj/10;
		lp=lp->next;
		switch(a)
		{
		case10:q++;break;
		case9:w++;break;
		case8:e++;break;
		case7:r++;break;
		case6:t++;break;
		default:y++;break;
		}
	}
	fprintf(fp,"成绩为100有%d人\r\n",q);
	fprintf(fp,"成绩为90~99有%d人\r\n",w);
	fprintf(fp,"成绩为80~89有%d人\r\n",e);
	fprintf(fp,"成绩为70~79有%d人\r\n",r);
	fprintf(fp,"成绩为60~69有%d人\r\n",t);
	fprintf(fp,"不及格的有%d人\r\n",y);
	fprintf(fp,"\r\n");
	fclose(fp);
}
/*修改成绩*/
voidchangescore(Seqlist*lp,Seqlist*bk)
{
	inti,j;
	Seqlist*la=lp->next,*lb=bk->next;
	while(lb){
		while(la){
			if(lb->data.xh==la->data.xh)
			{
				if(lb->data.cj>=60)
					la->data.cj=60;
				elseif(lb->data.cj>la->data.cj)
					la->data.cj=lb->data.cj;
				break;
			}
			la=la->next;
		}
		lb=lb->next;
	}
	print(lp);
}

一道C语言的小题目，跪求解答！

标签：CC++ 信息技术 C（编程语言） 编程 编程语言