c语言113道试题(3)

for(k=0;k<7;k++) printf(\ }

printf(\}

14.打印以下图案： 1 121 12321 1234321 15. 打印以下图案： 1234321 12321 121 1

16.编写一个统计学生成绩程序，完成以下功能：输入#include #define N 4 struct student {

char num[3];

4个学生的2门课成绩； char name[4]; float score[2]; float avr; } stu[N]; void main() {

int i,j;

float sum,average;

for(i=0;i

printf(\ｉｎｐｕｔ scores of student%d:\\n\ printf(\

scanf(\ for(j=0;j<2;j++) {

printf(\ scanf(\ } }

average=0; /*计算*/

for(i=0;i

for(j=0;j<2;j++) sum+=stu[i].score[j]; stu[i].avr=sum/2; average+=stu[i].avr; }

average/=N;

printf(\ for(i=0;i

printf(\ for(j=0;j<2;j++)

printf(\ printf(\ }

printf(\}

17. 打印以下图案： ***** *****

***** ***** ***** #include void main() {

char a[5]={'*','*','*','*','*'}; int i,j,k; char space=' ';

printf(\ for(i=0;i<5;i++) {

printf(\ printf(\ for(j=1;j<=i;j++) printf(\ for(k=0;k<5;k++) printf(\ }

printf(\}

18.给出年、月、日，计算该日是该年的第几天。

#include void main() {

int sum_day(int,int); int leap(int year); int year,month,day,days;

printf(\ｉｎｐｕｔ date(year,month,day):\ scanf(\ printf(\ days=sum_day(month,day); if(leap(year)&&month>=3) days=days+1;

printf(\}

int sum_day(int month,int day) {

int day_tab[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; int i;

for(i=1;i