C程序设计教程与实验 实验三 吉顺如

------------------------------------------------------------------------C程序设计教程与实验实验三吉顺如C程序设计教程与实验Sy3_1:#include<stdio.h>main(){ floatc,f; printf("请输入一个华氏温度"); scanf("%f",&f); c=(5.0/9)*(f-32); printf("摄氏温度为:%5.2f\n",c);}Sy3_2:#include<stdio.h>main(){ inta,b; floatx; scanf("%d%d",&a,&b); x=2.0*a*b/((a+b)*(a+b)); printf("x=%f\n",x);}Sy3_3:#include<stdio.h>main(){ charc1,c2; c1=getchar(); printf("%c,%d\n",c1,c1); c2=c1-32; printf("%c,%d\n",c2,c2);}Sy3_4:#include<stdio.h>main(){ intx; floaty; printf("enterx,y:"); scanf("%d%f",&x,&y); printf("x+y=%.1f\n",x+y);}Sy3_5:#include<stdio.h>main(){ floatpi,h,r,l,s,sq,vq,vz; pi=3.1415926; printf("请输入圆半径r,圆柱高h:\n"); scanf("%f%f",&r,&h); l=2*pi*r; s=pi*r*r; sq=4*pi*r*r; vq=4.0/3*pi*r*r*r; vz=pi*h*r*r; printf("圆周长为:%5.2f\n",l); printf("圆面积为:%5.2f\n",s); printf("圆球表面积为:%5.2f\n",sq); printf("圆球体积为:%5.2f\n",vq);printf("圆柱体积为:%5.2f\n",vz);}Sy3_6:#include<stdio.h>main(){ intx,y,t; printf("请输入x,y:"); scanf("%d%d",&x,&y); if(x<y) {t=x;x=y;y=t;} printf("交换后的x:%d,y:%d\n",x,y);}Sy3_7:#include<stdio.h>main(){ charc1,c2,c3; printf("pleaseinoutthreeletters:"); c1=getchar(); c2=getchar(); c3=getchar(); printf("%c\n",x);printf("%c\n",y);printf("%c\n",z);}Sy3_8：#include<stdio.h>#include<math.h>voidmain(){ floatx1,x2,x,a,b,c; printf("请输入系数a,b,c:"); scanf(%f%f%f",&a,&b,&c); if(b*b-4*a*c>0) x1=[-b+sqrt(b*b-4*a*c)]/(2*a); x2=[--bsqrt(b*b-4*a*c)]/(2*a); printf("x1:%fx2:%f\n",x1,x2); elsei