C语言程序设计实验指导高等教育出社.docx

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1、C语言程序设计实验指导高等教育出社C语言程序设计部分实验参考答案 实验2 #include int main/2-1-2 #include int main/2-1-3 #include int main/2-1-4 #include int main/2-1/5 #include int main/2-1-6 #include int main/2-2-1 int x=3,y; y=x*x; printf(%d=%d*%dn,y,x,x); printf(%d*%d=%dn,x,x,y); return 0; int n=152,a,b,c; c=n%10; b=(n/10)%10; a=n

2、/100; printf(整数%d 的个位数字是%d, 十位数字是%d, 百位数字是%dn,n, c, b, a); return 0; int math=87,eng=72,comp=93; printf(math=%d, eng=%d, comp=%d, average=%dn,math, eng, comp, (math+eng+comp)/3); return 0; int c=26,f; f=c*9/5+32; printf(celsius=%d, fahr=%dn,c, f); return 0; int c,f=150; c=f*5/9-32*5/9; printf(fahr=%

3、d, celsius=%dn,f, c); return 0; double x, y; printf(Enter x:); scanf_s(%lf,&x); if(x!=0) printf(f(%.2f)=%.1fn,x,y); return 0; y=1/x; y=0; else #include int main/2-2-2 #include int main/2-2-3 #include #include int main/2-2-4 #include double x, y; printf(Enter x); scanf_s(%lf,&x); if(x0.0) y=pow(x+1,2

4、)+2*x+1/x; y=sqrt(x); else printf(f(%.2f)=%.2fn,x,y); return 0; double money, rate,x=1.0; int i,year; printf(Enter money, year and rate:); scanf(%lf %d %lf,&money,&year,&rate); for(i=1;i=year;i+) x=x*(1+rate); printf(intrest=%.2fn,money*x-money); return 0; int celsius, fahr; fahr=100; celsius=5*(fah

5、r-32)/9; printf(fahr=%d, celsius=%dn,fahr,celsius); return 0; #include int main/2-2-5 #include int main/2-2-6 #include int main/2-3-1 #include int main/2-3-2 int i,m,s=0; printf(Enter m:); scanf(%d,&m); for(i=m;i=100;i+) s=s+i; printf(sum=%dn,s); return 0; int i,sum=0; for(i=1;i=100;i+) printf(sum=%

6、dn,sum); return 0; sum=sum+i; int x, y; printf(Enter num1:); scanf_s(%d,&x); printf(Enter num2:); scanf_s(%d,&y); printf(%d+%d=%dn,x,y,x+y); printf(%d-%d=%dn,x,y,x-y); printf(%d*%d=%dn,x,y,x*y); printf(%d/%d=%dn,x,y,x/y); printf(%d%d=%dn,x,y,x%y); return 0; double x, y; printf(Enter x:); scanf_s(%lf

7、,&x); if(x=10) y=1/x; y=x; else printf(f(%.2f)=%.1fn,x,y); return 0; #include int main/2-3-3 #include int main/2-3-4 #include int main/2-3-5 #include int main/2-3-6 int low, uper; double fahr,celsius; printf(Enter low:); int i,n; double s=1.0,t=1.0,sign=1.0; printf(Enter n:); scanf(%d,&n); for(i=1;i

8、n;i+) printf(sum=%.3fn,s); return 0; sign=-sign; t=(t+3); s=s+1/t*sign; int i,n; double s=0.0; printf(Enter n:); scanf(%d,&n); for(i=1;i=n;i+) s=s+1.0/(2*i-1); printf(sum=%fn,s); return 0; int i,m,n; double s=0.0; printf(Enter m:); scanf(%d,&m); printf(Enter n:); scanf(%d,&n); for(i=m;i=n;i+) s=s+1.

9、0/i; printf(sum=%fn,s); return 0; scanf_s(%d,&low); printf(Enter uper:); scanf_s(%d,&uper); printf(fahr celsiusn); for(fahr=low;fahr=uper;fahr+=2) return 0; celsius=5.0/9.0*(fahr-32.0); printf(%3.0f %6.1fn,fahr,celsius); #include int main/2-3-7 #include int main/2-3-8 #include #include int x, n,i; d

10、ouble p=1.0; printf(Enter x:); scanf(%d,&x); printf(Enter n:); scanf(%d,&n); for(i=1;i=n;i+) p=p*x; printf(%d的%d次方是%.0fn,x, n,p); return 0; int m, n, i; double p,sum=0.0; printf(Enter m:); scanf(%d,&m); printf(Enter n:); scanf(%d,&n); p=1.0; for(i=1;i=m;i+) p=p*i; sum=sum+p; p=1.0; for(i=1;i=n;i+) p

11、=p*i; sum=sum+p; printf(sum=%.0fn,sum); return 0; int main/2-4-1 #include #include int main/2-4-4 #include #include int main/2-2-5 #include int main/2-2-6 int x, y; printf(Enter num1:); scanf_s(%d,&x); printf(Enter num2:); scanf_s(%d,&y); printf(%d+%d=%dn,x,y,x+y); printf(%d-%d=%dn,x,y,x-y); printf(

12、%d*%d=%dn,x,y,x*y); printf(%d/%d=%dn,x,y,x/y); printf(%d%d=%dn,x,y,x%y); double x, y; printf(Enter x:); scanf_s(%lf,&x); if(x=10) y=1/x; y=x; else printf(f(%.2f)=%.1fn,x,y); return 0; double sum=0.0,i; for(i=100;i=1000;i+) printf(sum=%.2fn,sum); return 0; sum+=sqrt(i); int n,i; printf(Enter n:); sca

13、nf(%d,&n); for(i=0;i=n;i+) printf(pow(3,%d)=%.0fn,i,pow(3.0,i); return 0; / return 0; return 0; #include int main/2-3-1 #include int main/2-3-2 #include int main/2-3-3 #include int main/2-3-4 int i,n; double s=0.0; printf(Enter n:); scanf(%d,&n); for(i=1;i=n;i+) s=s+1.0/(2*i-1); printf(sum=%fn,s); r

14、eturn 0; int i,m,n; double s=0.0; printf(Enter m:); scanf(%d,&m); printf(Enter n:); scanf(%d,&n); for(i=m;i=n;i+) s=s+1.0/i; printf(sum=%fn,s); return 0; int i,m,s=0; printf(Enter m:); scanf(%d,&m); for(i=m;i=100;i+) s=s+i; printf(sum=%dn,s); return 0; int i,sum=0; for(i=1;i=100;i+) printf(sum=%dn,s

15、um); return 0; sum=sum+i; #include int main/2-3-5 #include int main/2-3-6 #include int main/2-3-7 int m, n, i; double p,sum=0.0; printf(Enter m:); scanf(%d,&m); printf(Enter n:); scanf(%d,&n); p=1.0; for(i=1;i=m;i+) p=p*i; sum=sum+p; p=1.0; for(i=1;i=n;i+) int low, uper; double fahr,celsius; printf(

16、Enter low:); scanf_s(%d,&low); printf(Enter uper:); scanf_s(%d,&uper); printf(fahr celsiusn); for(fahr=low;fahr=uper;fahr+=2) return 0; celsius=5.0/9.0*(fahr-32.0); printf(%3.0f %6.1fn,fahr,celsius); int i,n; double s=1.0,t=1.0,sign=1.0; printf(Enter n:); scanf(%d,&n); for(i=1;in;i+) printf(sum=%.3f

17、n,s); return 0; sign=-sign; t=(t+3); s=s+1/t*sign; p=p*i; sum=sum+p; printf(sum=%.0fn,sum); return 0; #include int main/2-3-8 #include #include int main/2-4-1 #include #include int main/2-4-4 double sum=0.0,i; for(i=100;i=1000;i+) printf(sum=%.2fn,sum); return 0; sum+=sqrt(i); int n,i; printf(Enter

18、n:); scanf(%d,&n); for(i=0;i=n;i+) printf(pow(3,%d)=%.0fn,i,pow(3.0,i); return 0; int x, n,i; double p=1.0; printf(Enter x:); scanf(%d,&x); printf(Enter n:); scanf(%d,&n); for(i=1;i=n;i+) p=p*x; printf(%d的%d次方是%.0fn,x, n,p); return 0; 实验3 #include #include int main/3-1 double a, b, c, d; printf(Ente

19、r a, b, c: ); scanf(%lf%lf%lf,&a,&b,&c); d=b*b-4*a*c; if(a=0) if(b=0) if(c=0) printf(系数均为，方程无意义！n); printf(a、b为，c不为，方程不成立！n); else else printf(x=%.2fn,c/b); else if(d=0) printf(x1=%.2fn,(-b+sqrt(d)/(2*a); printf(x1=%.2fn,(-b-sqrt(d)/(2*a); printf(x1=%.2f+%.2fin,-b/(2*a),sqrt(-d)/(2*a); printf(x1=%.2

20、f-%.2fin,-b/(2*a),sqrt(-d)/(2*a); else return 0; #include int main/3-2 #include int main/3-3 int letter=0,blank=0,digit=0,other=0,i; char ch; printf(Input 10 characters: ); for(i=0;i=a&ch=A&ch=Z) letter+; int x,y; printf(Enter x: ); scanf(%d,&x); if(x0) y=-1; y=0; y=1; else if(x=0) else printf(sign(

21、%d)=%dn,x,y); return 0; else if(ch= |ch=n) blank+; digit+; other+; else if(ch=0) else printf(letter=%d, blank=%d, digit=%d, other=%dn,letter,blank,digit,other); return 0; #include int main/3-4 #include int main/3-5 int choice,count; for(count=0;count5;count+) printf(1applen); printf(2pearn); printf(

22、3orangen); printf(4grapen); printf(0exitn); printf(Enter your choice:); scanf(%d,&choice); switch(choice) case 0: return 0; case 1:printf(price is %.2fn,3.0);break; char grade; printf(Input Grade: ); grade=getchar; switch(grade) return 0; case A:; case a:printf(%c对应的百分制成绩区间是100n,grade);break; case B

23、:; case b:printf(%c对应的百分制成绩区间是90n,grade);break; case C:; case c:printf(%c对应的百分制成绩区间是79n,grade);break; case D:; case d:printf(%c对应的百分制成绩区间是69n,grade);break; case E:; case e:printf(%c对应的百分制成绩区间是59n,grade);break; default:printf(数据输入错误n); case 2:printf(price is %.2fn,2.5);break; case 3:printf(price is %

24、.2fn,4.1);break; case 4:printf(price is %.2fn,10.2);break; default:printf(price is %.2fn,0.0); return 0; #include int main/3-6 #include #include int main/3-7 #include int main/3-8 double salary,rate; printf(Enter the salary: ); scanf(%lf,&salary); if(salary=850) rate=0.0; rate=0.05; else if(salaryc&

25、a+cb&b+ca) s=(a+b+c)/2; printf(area=%.2f; perimeter=%.2fn,sqrt(s*(s-a)*(s-b)*(s-c),a+b+c); printf(These sides do not correspond to a valid trianglen); int i; double grade; for(i=0;i5;i+) return 0; printf(Enter grade: ); scanf(%lf,&grade); if(grade60.0) printf(Failn); printf(Passn); else else return

26、0; else if(salary=2850.0) rate=0.1; rate=0.15; rate=0.2; else if(salary=5850.0) else printf(tax=%.2fn,rate*(salary-850); return 0; #include int main/3-9 #include int main/3-10 char sign; int x,y; printf(输入x运算符y：); scanf(%d%c%d,&x,&sign, &y); int i,n,grade,a=0,b=0,c=0,d=0,e=0; printf(Enter n: ); scan

27、f(%d,&n); for(i=0;in;i+) printf(The number of A(90100):%dn,a); printf(The number of B(8089):%dn,b); printf(The number of C(7079):%dn,c); printf(The number of D(6069):%dn,d); printf(The number of E(059):%dn,e); return 0; printf(Enter grade %d: ,i+1); scanf(%d,&grade); switch(grade/10) case 9: case 10

28、:a+;break; case 8:b+;break; case 7:c+;break; case 6:d+;break; case 5: case 4: case 3: case 2: case 1: case 0:e+;break; if(sign=*) printf(%d * %d = %dn,x,y,x*y); printf(%d / %d = %dn,x,y,x/y); printf(%d Mod %d = %dn,x,y,x%y); printf(运算符输入错误！n); else if(sign=/) else if(sign=%) else return 0; 实验4 #incl

29、ude #include int main/4-1-2 #include int main/4-1-3 int x,sum; sum=0; printf(Input integers:); scanf(%d,&x); while(x0) printf(The sum of the odd numbers is %dn,sum); if(x%2!=0) sum=sum+x; scanf(%d,&x); int flag,denominator; double s,eps,item; printf(Input eps:); scanf(%lf,&eps); s=0.0; flag=1; denom

30、inator=1; item=1.0; while(fabs(item)eps) printf(s=%.6fn,s); return 0; item=flag*1.0/denominator; s=s+item; flag=-flag; denominator=denominator+3; return 0; #include int main/4-1-4 int num,count; printf(Input an integer:); scanf(%d,&num); count=0; do num=num/10; count+; while(num!=0); printf(count=%d

31、n,count); return 0; #include int main/4-1-5 int main/4-1-6 #include int n,s=0,c=0; printf(Input an integer:); scanf(%d,&n); do s+=n%10; n/=10; c+; int n,x,min,i; printf(Input n:); scanf(%d,&n); printf(Input numbers:); scanf(%d,&x); min=x; for(i=1;in;i+) printf(min=%dn,min); return 0; scanf(%d,&x); i

32、f(xmin) min=x; while(n); printf(count=%d, sum=%dn,c,s); return 0; int main/4-1-7 #include int main/4-1-8 #include int main/4-1-9 #include #include int main/4-2-2 int m,n,i,j,st,c=0; printf(Input m: ); int n,i; double h,sum=0.0; printf(Input height: ); scanf(%lf,&h); printf(Input n: ); scanf(%d,&n);

33、sum+=h; for(i=1;i=n;i+) printf(distance=%.1fn,sum); printf(height=%.1fn,h); return 0; sum+=h; h/=2.0; int a,n,i,s=0,t=0; printf(Input a, n:); scanf(%d%d,&a,&n); for(i=0;in;i+) printf(s=%dn,s); return 0; t=10*t+a; s+=t; double a,b,c,s=0.0; int i,n; printf(Input n:); scanf(%d,&n); for(a=1.0,b=1.0,i=0;

34、in;i+,c=a+b,a=b,b=c) s+=(1.0+a/b); printf(s=%.2fn,s); return 0; scanf(%d,&m); if(m=1) m+; printf(Input n: ); scanf(%d,&n); for(i=m;i=n;i+) return 0; st=sqrt(double)i); for(j=2;jst) printf(%d ,i); c+; if(!(c%6) printf(n); #include int main/4-2-3 #include int main/4-2-4 int m,n,k,a,b,c,tmp; printf(Inp

35、ut m: ); scanf(%d,&m); printf(Input n: ); int money,f1,f2,f5,count=0; printf(Input money: ); scanf(%d,&money); for(f1=1;f1=money-7;f1+) for(f2=1;f2=money-6;f2+) for(f5=1;f5=money-3;f5+) if(f1+2*f2+5*f5=money) count+; printf(count=%dn,count); for(f1=1;f1=money-7;f1+) return 0; for(f2=1;f2=money-6;f2+

36、) for(f5=1;f5=money-3;f5+) if(f1+2*f2+5*f5=money) printf(fen5: %d fen2: %d fen1: %dn,f5,f2,f1); scanf(%d,&n); for(k=m;k=n;k+) return 0; tmp=k; a=tmp%10; tmp/=10; b=tmp%10; tmp/=10; c=tmp; if(a*a*a+b*b*b+c*c*c=k) printf(%dt(%d*%d*%d+%d*%d*%d+%d*%d*%d=%d)n,k,c,c,c,b,b,b,a,a,a,k); #include int main/4-2

37、-5 #include/5-2 int sign(int x) int main int x; printf(Enter x:); scanf(%d,&x); printf(sign(%d)=%dn,x,sign(x); if(x0) return 1; return 0; if(x=0) return -1; int i,j,s; for(i=1;i=200;i+) return 0; s=1; for(j=2;j=i/2;j+) if(i%j=0) s=s+j; if(s=i) printf(%d=1,i); for(j=2;j=i/2;j+) if(i%j=0) printf(+%d,j

38、); printf(n); return 0; #include/5-3 int even(int x) int main #include/5-4 #include double distance(double x1,double y1, double x2, double y2) int main #include/5-5 #include int prime(int m) int main int m,n,c=0,s=0,k; printf(Input m:); int k,sqrtm=sqrt(double)m); for(k=2;k=sqrtm;k+) if(m%k=0) return 0; double x1, y1, x2, y2; printf(Input (x1, y1):); scanf(%lf%lf,&x1,&y1); printf(Input (x2, y2):); scanf(%lf%lf,&x2,&y2); p