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1、C 语言上机操作题输出图像输出图像#includevoid main()printf(“*n“);printf(“*n“);printf(“*n“);printf(“*n“);加法计算#includevoid main()int a,b,c;printf(“please input a,b“);scanf(“%d,%d“,c=a+b;printf(“%d+%d=%dn“,a,b,c);求平均值#includevoid main()float a,b,c,aver;printf(“please input a,b,c“);scanf(“%f%f%f“,aver=(a+b+c)/3;printf(
2、“The average value is :%fn“,aver);小写字母转大写#includevoid main()int i=0;char string30;gets(string);for(i=0;stringi!=0;i+)if(stringi=aa+=a*=6;x=y+;y=+x;a=(x+)+y;printf(“%d,%d,%d“,a,x,y);计算球、圆柱表面积体积#includevoid main()float r,h,l,s,Vqiu,Vzhu,pi=3.14159;printf(“please input r,h:n“);scanf(“%f%f“,l=2*pi*r;s=p
3、i*r*r;Vqiu=4/3*pi*r*r*r;Vzhu=s*h;printf(“zhouchang is:%.2f n yuan mian ji is:%.2f nqiutiji is:%.2fnzhu tiji is:%.2f“,l,s,Vqiu,Vzhu);求三角形面积（不判断）#include#includevoid main ()float a,b,c,s,area;printf(“please input a,b,cn“);scanf(“%f%f%f“,s=(a+b+c)/2;area=sqrt(s*(s-a)*(s-b)*(s-c);printf(“area is:%.2f“,a
4、rea);求三角形面积（判断）#include#includevoid main ()float a,b,c,s,area;printf(“please input a,b,cn“);scanf(“%f%f%f“,if(a+bcarea=sqrt(s*(s-a)*(s-b)*(s-c);printf(“area is:%.2f“,area);elseprintf(“please input the right datan“);求方程的根（不判断）#include#includevoid main ()float a,b,c,s,x1,x2,disc;printf(“please input a
5、,b,cn“);scanf(“%f%f%f“,disc=b*b-4*a*c;x1=(-b+sqrt(disc)/2*a;x2=(-b-sqrt(disc)/2*a;printf(“x1:%.2fnx2:%.2fn“,x1,x2);求方程的根（判断）#include#includevoid main ()float a,b,c,s,x1,x2,disc;printf(“please input a,b,cn“);scanf(“%f%f%f“,disc=b*b-4*a*c;if(disc=0)x1=(-b+sqrt(disc)/2*a;x2=(-b-sqrt(disc)/2*a;printf(“x
6、1:%6.2fnx2:%6.2fn“,x1,x2);elseprintf(“方程无实根n“);判断字符类型#includemain()/char c;printf(“Enter a single character :n“);scanf(“%c“,if(c=aint j;printf(“请输入分数:n“);scanf(“%f“,j=score/10;switch(j)case 10: ;case 9:printf(“等级为 A“);break;case 8:printf(“等级为 B“);break;case 7:printf(“等级为 C“);break;case 6:printf(“等级为
7、 D“);break;default:printf(“等级为 E“);break;判断成绩等级（用 if 实现）#includemain()float score;int j;printf(“请输入分数:n“);scanf(“%f“,j=score/10;if(j=9)printf(“等级为 An“);else if(j=8)printf(“等级为 Bn“);else if(j=7)printf(“等级为 Cn“);else if(j=6)printf(“等级为 Dn“);elseprintf(“等级为 En“);输出最大值#includemain()int a,b,c,max;printf(
8、“please input a,b,cn“);scanf(“%d%d%d“,if(ab)max=a;elsemax=b;if(maxmain()int num,place,shi,ge,bai;printf(“please intput a numbern“);scanf(“%d“,if(num99for(i=0;ivoid main()int m,n,r;printf(“please enter m,n:“);scanf(“%d%d“,printf(“m=%d,n=%dn“,m,n);r=m%n;while(r!=0)m=n;n=r;r=m%n;printf(“H.C=%dn“,n);求最大
9、公约数和最小公倍数#includevoid main()int m,n,r,p;printf(“please enter m,n:“);scanf(“%d%d“,printf(“m=%d,n=%dn“,m,n);p=m*n;r=m%n;while(r!=0)m=n;n=r;r=m%n;printf(“最大公约数是：%dn“,n);printf(“最小公倍数是：%d“,p/n);输出水仙花数#includevoid main()int n,shi,ge,bai;printf(“所有的水仙花数为:n“);for(n=100;nvoid main()int i,j;for(i=1;ivoid mai
10、n()int i,j;for(i=1;i=i;j-)printf(“%d*%d=%dt“,i,j,i*j);printf(“nn“);输出图形#includevoid main()int i,j,k;for(i=1;i=1;k-)printf(“ “);for(j=1;jvoid main()int table10;int i,j;for(i=0;imax)max=tablei;j=i;printf(“最高成绩是：%d 它是第%d 个数“,max,j+1);用数组实现小写字母转大写#include #include void main()char ary30, i;puts(“please i
11、ntput a string:“);gets(ary);for(i=0; i=97for(i=0;ivoid main()int i=0,n=1;float ary20,sum=0,avr,x;scanf(“%f“,while(x0int i,j;for(i=0;ivoid main()int i,n=0,m;int a10=0,1,2,3,4,5,6,7,8,9;scanf(“%d“,for(i=0;iint fun(int x)int i;for(i=2;iint j,t,a10, i;void fun()for(i=0;iint a44,b44,i,j;void change()for(
12、i=0;iint f,n,p;int fib(int n)if(n=0)p=0;else if(n=1)p=1;elsep=fib(n-1)+fib(n-2);return p;void main()while(1)printf(“请输入要求的 fibonacci 数列的项数n“);scanf(“%d“,f=fib(n);printf(“fibonacci 数列的第%d 项为%dn“,n,f);观察 s 的输出值#includeint a=3;void main()int s=0;int a=5;s+=a+;s+=a+;printf(“%3d“,s);观察 a 的输出值#includevoid fun()static int a=0;a+=2;printf(“%d,“,a);void main()int c;for(c=1;c4;c+)fun();
