## 实验5 C语言数组 ### 实验任务 5-1.c 运行结果截图： ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532654-20210510-1620641730528) 5-2.c 运行结果截图： ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532654-20210510-1620641734775) 5-3.c 运行结果截图： ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532654-20210510-1620641738555) 5-4.c 运行结果截图： ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532654-20210510-1620641742861) 5-5.c 运行结果截图： ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532654-20210514-1620970893534) 5-6.c 运行结果截图： ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532654-20210514-1620970898396) 5-7.c 运行结果截图： ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532654-20210514-1620970902486) ### 上机练习 1、利用一维数组存储某班级学生的数学成绩，输入成绩，求出平均成绩和最高分。 - 代码 ```c #include int max; float average ( int score [ ] , int n ) { int i ; float aver , sum = score [0] ; max = score [ 0 ] ; for( i=1 ; i max ) max=score[i]; sum=sum+score[i] ; } aver=sum/n; return ( aver ) ; } main( ) { float ave ; int score1[10] , i ; for( i=0 ; i<10 ; i++ ) scanf ( "%d", &score1[i] ) ; ave=average ( score1 , 10 ) ; printf ( "max=%d\n" , max ) ; printf ("average = %6.2f\n" , ave ) ; } ``` - 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532670-20210521-1621570816148) 2、[课后习题6.3]将一个数组中的元素按逆序重新存放。 - 代码 ```c #include int main() { char arr[10] = {1,2,3,4,5,6,7,8,9,0}; int i = 0; int len = sizeof(arr)/sizeof(arr[0]); int tmp = 0; for(i = 0;i < (len/2);++i) { tmp = arr[9-i]; arr[9-i] = arr[i]; arr[i] = tmp; } for(i=0;i < len; ++i) { printf("%d",arr[i]); } return 0; } ``` - 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532670-20210521-1621570858809) 3、利用二维数组存储学生的数学、C语言、体育成绩，输入成绩，求每个人的平均成绩。 - 代码 ```c #include int main() { int i,j,s=0,average[5],studentscore[5][3],sum[3]; for(i=0;i<5;i++) { printf("第%d个学生的score\n",i+1); for(j=0;j<3;j++) { switch(j) { case 0:printf("mathscore:");break; case 1:printf("Cscore:");break; default:printf("PEscore:");break; } scanf("%d",&studentscore[i][j]); s=s+studentscore[i][j]; } sum[i]=s; average[i]=s/3; s=0; } for(i=0;i<5;i++) { printf("%d student mathscore,Cscore,PEscore?\n",i+1); for(j=0;j<3;j++) { printf(" %d ",studentscore[i][j]); } printf(" sum:%d\t,avrage:%d\n",sum[i],average[i]); } return 0; } ``` - 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532670-20210521-1621570882857) 4、 [课后习题6.4] 打印输出10行的杨辉三角形。 - 代码 ```c #include float J(int i) { int j; float k=1; for(j=1;j<=i;j++) k=k*j; return(k); } float C(int i,int j) { float k; k=J(j)/(J(i)*J(j-i)); return(k); } void main() { int i=0,j,k,n; while(i<=0||i>16) { printf("请输入要打印的行数："); scanf("%d",&i); } printf("%d行杨辉三角如下：\n",i); for(j=0;j int main() { int i; char s1[50]; char s2[]="abcdefg123"; for(i=0;i int main() { int i,j; char s1[20],s2[20]; printf("input string1:"); scanf("%s",s1); printf("input string2:"); scanf("%s",s2); for(i=0;s1[i]!='\0';) i++; for(j=0;s2[j]!='\0';) s1[i++]=s2[j++]; s1[i]='\0'; printf("The new string is:%s\n",s1); return 0; } ``` - 运行结果截图：![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1532670-20210521-1621570954962)

“程序设计基础II”实验报告