控制台函数

/*============================================================================  
 Name        : Exercise.cpp  
 Author      : Haier  
 Version     : 1.01  
 Copyright   : Copyright (c) 2014  
 Description : Consele program in C, Ansi-style, Compile by Code:Block  
 ============================================================================*/
#include <stdio.h>
#include <ctype.h>
#include <math.h>
#include <windows.h>

int main()
{

    HANDLE Color;
    char Choice='y';
    double Param;
    Color=GetStdHandle(STD_OUTPUT_HANDLE);
    SetConsoleTextAttribute(Color,FOREGROUND_RED);

    printf("Hello ,EveryBody !\n");

    do
    {
        fflush(stdin);
        printf("Please input your choice :");
        scanf("%c",&Choice);

        switch(toupper(Choice))
        {
        case 'S':
            {
                printf("Please input the param: ");
                scanf("%lf",&Param);

                printf("\n%lf",sin(Param));
                break;
            }
        case 'C':
            {
                printf("Please input the param: ");
                scanf("%lf",&Param);

                printf("\n%lf",cos(Param));
                break;
            }
        case 'T':
            {
                printf("Please input the param: ");
                scanf("%lf",&Param);

                printf("\n%lf",tan(Param));
                break;
            }
        default:
            {
                printf("Wrong Param  !\n");
            }

        }

        fflush(stdin);
        printf("\nDo You want to try again ?");
        scanf("%c",&Choice);
    }while(toupper(Choice)=='Y');


    return 0;
}