C语言课后实验答案.doc

3.15. P161. #includeusing namespace std;int main()coutI am a student,and I like programming !endl;return 0;2. #includeusing namespace std;int main()double a,b,c;coutab;c=a*b;couta*b=cendl;return 0;3. #includeusing namespace std;int main()char date41;coutendldate;coutendl=endl;cout=endl;return 0;4. #include#includeusing namespace std;int main()double a,b,h,s;int i,n;a=-1.0;b=1.0;n=200;h=(b-a)/n;s=(sin(a)+sin(b)/2;for(i=1;in;i=i+)s=s+sin(a+i*h);s=s*h;cout结果是：sendl; return 0;5. #includeusing namespace std;double area(double length,double width)double a;a=length*width; return a;int main()cout长为3，宽为4的矩形面积是：area(3,4)endl;coutlw;cout长：l宽：w面积是：area(l,w)endl; return 0;P431. #include#includeusing namespace std;int main()double a,b,c,s,area;coutabc;if(a+b=c|a+c=b|c+b=a)coutError dataendl;else s=(a+b+c)/2;area=sqrt(s*(s-a)*(s-b)*(s-c);coutarea=areaendl;return 0;2. #include#includeusing namespace std;int main()double a,b,c;coutab; double m=fabs(a)+fabs(b);c=sin(m)/aqrt(cos(m);coutc=cendl;return 0;3. #includeusing namespace std;int main()double a,b,c;cout输入3个小数：abc;cout你输入的3个小数：endl;coutabcendl;cout这3个小数的和是：a+b+cendl;cout这3个小数的和按四舍五入方法转化成整数是：int(a+b+c+0.5)endl; return 0;4.#includeusing namespace std;int main() int a,b,c;double average;cout输入3个数：abc; average=(a+b+c)/3.0;coutaverage=averageendl; return 0;#includeusing namespace std;int main()int n,u=1;coutn;for(int i=1;i=n;i=i+1)u=u*i;coutn!=uendl;return 0;#includeint main()int sum=0,u=1;for(int i=1;i=10;i=i+1)u=u*i;sum=sum+u;coutsum=sumendl;return 0;#includeint main()int f0=0;int f1=1;int sum=1;int fn,n;coutn;switch(n)case 0:coutf(n)=f0endl;coutsum(n)=f0endl;break;case 1:coutf(n)=f1endl;coutsum(n)=f0+f1endl;break;default:for(int i=2;i=n;i=i+1)fn=f0+f1;sum=sum+fn;f0=f1;f1=fn;coutf(n)=fnendl;coutsum(n)=sumendl;return 0;#includeint main()int n,sum,f100;coutn;sum=0;f0=0;f1=1;switch(n)case 0: coutf(n)=f0endl;coutsum(n)=f0endl;break;case 1:coutf(n)=f1endl;coutsum(n)=f0+f1endl;break;default:for(int i=0;i=2)fi=fi-1+fi-2;sum=sum+fi;coutf(n)=fnendl;coutsum(n)=sumendl;return 0;#includeusing namespace std;int main()const int M=4;const int N=4;double aMN= 4,6,8,9,2,7,4,5,3,8,16,15,1,5,7,11;double taNM;int i,j;for(i=0;iN;i=i+1)for(j=0;jM;j=j+1)taij=aij;cout矩形a为:endl;for(i=0;iN;i=i+1)for(int j=0;jM;j=j+1)coutaijt;coutendl;cout矩形a的转置阵为：endl;for(i=0;iN;i=i+1)for(int j=0;jM;j=j+1)couttaijt;coutendl;return 0;#includeusing namespace std;#define PERSON 6#define COURSE 3int main()int studentPERSONCOURSE+2;int i,j;coutplease input data of student:endl;for(i=0;istudenti0;studentiCOURSE+1=0;for(j=1;jstudentij;studentiCOURSE+1=studentiCOURSE+1+studentij;studentiCOURSE+1=studentiCOURSE+1/COURSE;cout学号 高数 英语 体育 平均分endl;cout-endl;for(i=0;iPERSON;i+)for(j=0;j=COURSE+1;j+)coutstudentijt;coutendl;return 0;#includeusing namespace std;int main()char s11,tmp;couts;for(int i=0;i5;i+)tmp=si;si=s9-i;s9-i=tmp;cout置逆后的字符串：sendl;return 0;#includeusing namespace std;int main()char str100=I love you;cout加密前的字符串是：str=A&stri=a&stri=x&stri=x&stri=z)stri=stri-x+a;i+;cout加密后的字符串是：strendl;return 0;#include#includeusing namespace std;void mystrrev(char string)int len=strlen(string);char tmp;for(int i=0;ilen/2;i+)tmp=stringi;stringi=stringlen-1-i;stringlen-1-i=tmp;int main()char str100;cout请输入待反转的字符串：;cin.get(str,100);mystrrev(str);cout反转的字符串后的字符串是：strendl;return 0;#includeusing namespace std;int imax(int array,int count)int max=array0;for(int i=0;imax)max=arrayi;return max;int imin(int array,int count)int min=array0;for(int i=0;