*常用圆形体体积计算器的主控函数*void cal(intsel)double vol ball(void);double vol_cylind(void );double vol_cone(void );switch (sel)case 1：printf("球体积为：%.2fn",vol_ball());break;case 2:printf("圆柱体积为：%.2fin",vol_cylind());break;case 3：printf("圆锥体积为：%.2fln",vol_cone(）);break;/*计算圆锥体积V=h/3*Pl*r*r*doublevol_cone(){ doubler, h;printf("请输入圆锥的底圆半径和高：");scanf("%lf%if",&r,&h);return(P*r*r*h/3.0);7/* 常用圆形体体积计算器的主控函数 */ void cal ( int sel ) { double vol_ball(void ); double vol_cylind(void ); double vol_cone(void ); switch (sel) { case 1: printf("球体积为：%.2f\n", vol_ball( )); break; case 2: printf("圆柱体积为：%.2f\n", vol_cylind( ) ); break; case 3: printf("圆锥体积为：%.2f\n", vol_cone( ) ); break; } } /* 计算球体体积 V=4/3*PI*r*r*r*/ double vol_ball( ) { double r ; printf("请输入球的半径："); scanf("%lf",&r); return(4.0/3.0*PI*r*r*r); } /* 计算圆柱体积 V=PI*r*r*h */ double vol_cylind( ) { double r , h ; printf("请输入圆柱的底圆半径和高："); scanf("%lf%lf",&r,&h); return(PI*r*r*h); } /* 计算圆锥体积 V=h/3*PI*r*r */ double vol_cone( ) { double r , h ; printf("请输入圆锥的底圆半径和高："); scanf("%lf%lf",&r,&h); return(PI*r*r*h/3.0); }