20140603_KUAS_VisualC++_Exam13

/************************************/
/** 20140603 Exam 13               **/
/** Maker  : Yan                   **/
/** E-Mail : [email protected] **/
/** Date   : 2014/06/03 am.11:40   **/
/************************************/

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h> //字元測試函數庫

//做轉換大小寫、字串中數字相乘之功能function
void function(char *inputPtr);

void main()
{
    printf("Enter a string: ");
    char input[50] = {EOF};
    scanf("%[^\n]", input);

    function(input); //input 前不需加取址符號(&), 因陣列本身就代表一連串的指標
}

void function(char *inputPtr)
{
    char output[50] = {EOF}; //Answer of string
    int number_multiply = 1; //Answer of number to multiply

    int counter_string = 0; //counter of string
    while(1)
    {
        //當字串讀取到結尾處時
        if(*inputPtr == '\0')
        {
            break;
        }
        else if(*inputPtr != '\0')
        {
            //islower = 判斷字元是否為小寫
            if(islower(*inputPtr))
            {
                //toupper = 將字元由小寫轉換為大寫
                output[counter_string] = toupper(*inputPtr);
            }
            //isupper = 判斷字元是否為大寫
            else if(isupper(*inputPtr))
            {
                //tolower = 將字元由大寫轉為小寫
                output[counter_string] = tolower(*inputPtr);
            }
            else
            {
                //其它狀況照常輸出, 如空格、數字等
                output[counter_string] = *inputPtr;
            }
            //add answer counter
            counter_string++;

            //isdigit = 判斷此字元是否為數字(0 - 9)
            if(isdigit(*inputPtr))
            {
                number_multiply *= (int)*inputPtr - 48;
            }

            //移至下個指標
            *inputPtr++;
        }
    }

    printf("Answer of string is: %s.\n", output);
    printf("Answer of number to multiply: %d.\n", number_multiply);
    system("pause");
}