#include <stdio.h>
 
int plus(int a, int b) { return a + b; }
int minus(int a, int b) { return a - b; }
 
int main(int argc, const char * argv[])
{
    int valuea = 0; //数値A
    int valueb = 0; //数値B
    int command = 0; //コマンド
    int anser = 0; //答え
 
    printf("数値Aを入力してね\n");
    scanf("%d",&valuea); //数値Aに代入
    printf("\n数値Bを入力してね\n");
    scanf("%d",&valueb); //数値Bに代入
    printf("\n実行する計算のコマンドを入力してね\n");
    printf("たしざん==1 引き算==2\n");
    scanf("%d",&command); //変数commandに代入
 
    if (command == 1) anser = plus(valuea,valueb);//コマンドが１ならばobject関数に足し算をするようにメソッドを送る
    else if (command == 2) anser = minus(valuea, valueb);//コマンドが2ならばobject関数に引き算をするようにメソッドを送る
    //object関数から帰ってきた計算の答えを変数anserに代入する
 
    printf("\n答えは%dになりましたとさ。",anser); //答えが入っている変数anserを標準出力
 
    return 0;
}
 

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