算數轉換程序1：#include<stdio.h>int main(){char c1 = 128;char c2 = 1;char c3 = c1+c2;//0111 1111//0000 0001//1000 0000,表示-127printf("%d\n",c3);return 0;}結果：-127請按任意鍵繼續. . .程序2：#include<stdio.h>int main(){char c1 = 12;char c2 = 1;char c3 = c1+c2;//0000 1100//0000 0001//0000 1101printf("%d\n",c3);return 0;}結果：13請按任意鍵繼續. . .