c語言課后題目及答案1.編寫一個C程序，計算并輸出兩個整數(shù)的和、差、積、商。```cinclude<stdio.h>intmain(){inta,b,sum,difference,product,quotient;printf("請輸入兩個整數(shù)：");scanf("%d%d",&a,&b);sum=a+b;difference=a-b;product=ab;quotient=a/b;printf("和：%d\n",sum);printf("差：%d\n",difference);printf("積：%d\n",product);printf("商：%d\n",quotient);return0;}```2.編寫一個C程序，計算并輸出一個數(shù)的平方和立方。```cinclude<stdio.h>intmain(){intnum,square,cube;printf("請輸入一個整數(shù)：");scanf("%d",&num);square=numnum;cube=numnumnum;printf("平方：%d\n",square);printf("立方：%d\n",cube);return0;}```3.編寫一個C程序，判斷一個數(shù)是否為素數(shù)。```cinclude<stdio.h>include<math.h>intisPrime(intnum){if(num<=1)return0;for(inti=2;i<=sqrt(num);i++){if(num%i==0)return0;}return1;}intmain(){intnum;printf("請輸入一個整數(shù)：");scanf("%d",&num);if(isPrime(num)){printf("%d是素數(shù)。\n",num);}else{printf("%d不是素數(shù)。\n",num);}return0;}```4.編寫一個C程序，計算并輸出一個數(shù)的階乘。```cinclude<stdio.h>longlongfactorial(intn){if(n==0)return1;returnnfactorial(n-1);}intmain(){intnum;printf("請輸入一個非負(fù)整數(shù)：");scanf("%d",&num);printf("%d的階乘是：%lld\n",num,factorial(num));return0;}```5.編寫一個C程序，實現(xiàn)字符串的反轉(zhuǎn)。```cinclude<stdio.h>include<string.h>voidreverseString(charstr[]){intlen=strlen(str);for(inti=0;i<len/2;i++){chartemp=str[i];str[i]=str[len-i-1];str[len-i-1]=temp;}}intmain(){charstr[100];printf("請輸入一個字符串：");scanf("%s",str);reverseString(str);printf("反轉(zhuǎn)后的字符串是：%s\n",str);return0;}```6.編寫一個C程序，實現(xiàn)簡單的學(xué)生成績管理系統(tǒng)。```cinclude<stdio.h>structStudent{charname[50];intscore;};voidaddStudent(structStudentstudents[],intcount,structStudentnewStudent){students[count]=newStudent;(count)++;}voidprintStudents(structStudentstudents[],intcount){printf("學(xué)生名單：\n");for(inti=0;i<count;i++){printf("%d.%s:%d\n",i+1,students[i].name,students[i].score);}}intmain(){structStudentstudents[100];intcount=0;charname[50];intscore;while(1){printf("輸入學(xué)生姓名和成績（輸入'q'退出）：");scanf("%s",name);if(name[0]=='q')break;scanf("%d",&score);structStudentnewStudent={name,score};addStudent(students,&count,newStudent);}printStudents(students,count);return0;}```7.編寫一個C程序，實現(xiàn)冒泡排序算法。```cinclude<stdio.h>voidbubbleSort(intarr[],intn){for(inti=0;i<n-1;i++){for(intj=0;j<n-i-1;j++){if(arr[j]>arr[j+1]){inttemp=arr[j];arr[j]=arr[j+1];arr[j+1]=temp;}}}}voidprintArray(intarr[],intsize){for(inti=0;i<size;i++){printf("%d",arr[i]);}printf("\n");}intmain(){intarr[]={64,34,25,12,22,11,90};intn=sizeof(arr)/sizeof(arr[0]);printf("原始數(shù)組：");printArray(arr,n);bubbleSort(arr,n);printf("排序后的數(shù)組：");printArray(arr,n);return0;}```8.編寫一個C程序，實現(xiàn)二分查找算法。```cinclude<stdio.h>intbinarySearch(intarr[],intl,intr,intx){while(l<=r){intm=l+(r-l)/2;if(arr[m]==x)returnm;if(arr[m]<x)l=m+1;elser=m-1;}return-1;}intmain(){intarr[]={2,3,4,10,40};intn=sizeof(arr)/sizeof(arr[0]);intx=10;intresult=binarySearch(arr,0,n-1,x);if(result==-1){printf("元素%d不在數(shù)組中。\n",x);}else{printf("元素%d位于數(shù)組的第%d個位置。\n",x,result+1);}return0;}```9.編寫一個C程序，實現(xiàn)鏈表的創(chuàng)建、插入和刪除操作。```cinclude<stdio.h>include<stdlib.h>structNode{intdata;structNodenext;};structNodecreateNode(intdata){structNodenewNode=(structNode)malloc(sizeof(structNode));newNode->data=data;newNode->next=NULL;returnnewNode;}voidinsertNode(structNodehead,intdata){structNodenewNode=createNode(data);if(head==NULL){head=newNode;}else{structNodetemp=head;while(temp->next!=NULL){temp=temp->next;}temp->next=newNode;}}voiddeleteNode(structNodehead,intkey){structNodetemp=head,prev=NULL;if(temp!=NULL&&temp->data==key){head=temp->next;free(temp);return;}while(temp!=NULL&&temp->data!=key){prev=temp;temp=temp->next;}if(temp==NULL)return;prev->next=temp->next;free(temp);}voidprintList(structNodenode){while(node!=NULL){printf("%d->",node->data);node=node->next;}printf("NULL\n");}intmain(){structNodehead=NULL;insertNode(&head,7);insertNode(&head,1);insertNode(&head,3);insertNode(&head,6);printf("鏈表：");printList(head);deleteNode(&head,3);printf("刪除節(jié)點后的鏈表：");printList(head);return0;}```10.編寫一個C程序，實現(xiàn)字符串的連接。```cinclude<stdio.h>include<string.h>voidconcatString(charstr1[],char