/*
---------------------------------------------
	複合代入演算子	increment_02.c
---------------------------------------------
*/

#include <stdio.h>

main()
{
	int a,b;
	int hozon;
	
	printf("ａはいくつ？");
	scanf("%d",&a);
	printf("ｂはいくつ？");
	scanf("%d",&b);
	
	printf("\nはじめの値 \n");
	printf("ａ＝%d \n",a);
	printf("ｂ＝%d \n",b);
	
	hozon=a;	/*（ａの値を保存）*/
	
	a += b;
	printf("\nａ＋＝ｂ　実行後 \n");
	printf("ａ＝%d \n",a);
	printf("ｂ＝%d \n",b);
	
	a=hozon;
	a-=b;
	printf("\nａ−＝ｂ　実行後 \n");
	printf("ａ＝%d \n",a);
	printf("ｂ＝%d \n",b);
	
	a=hozon;
	a*=b;
	printf("\nａ＊＝ｂ　実行後 \n");
	printf("ａ＝%d \n",a);
	printf("ｂ＝%d \n",b);

	a=hozon;
	a/=b;
	printf("\nａ／＝ｂ　実行後 \n");
	printf("ａ＝%d \n",a);
	printf("ｂ＝%d \n",b);

	a=hozon;
	a%=b;
	printf("\nａ％＝ｂ　実行後 \n");
	printf("ａ＝%d \n",a);
	printf("ｂ＝%d \n",b);
	
	printf("\n ---->　ｂの値は変化しない \n\n");
}