[問題] C的幾個測試問題

看板C_and_CPP作者SNSDpk5566 (5566 超強)時間11年前 (2012/09/23 22:40)推噓0(0推 0噓 18→)

留言18則, 5人參與討論串1/1

開發平台(Platform): (Ex: VC++, GCC, Linux, ...) VC 平台 void Test() { int a = 3; int b = 7; int sum; char name[9] = "abcdef"; char name1[9] = "ABCDEF"; char *str; str = name; //sum = a++ + ++b; //問1 a = 3 b = 8 sum = 11 then a = 4 對嗎?? //printf("%d\n",sum); //sum = ++a + b++; //問2 a = 4 b = 7 sum = 11 then b = 8 對嗎?? //printf("%d\n",sum); //sum = a+++b++; //問3 a = 3 b = 7 sum = 10 then a = 4 b = 8 對嗎?? //printf("%d\n",sum); //sum = ++a + ++b; //問4 a = 4 b = 8 sum = 12 對嗎?? //printf("%d\n",sum); for(str = name; *str != '\0'; str++) { putchar(*str++); //這個是ace } for(str = name1; *str != '\0'; str++) { putchar((*str)++); //這個跑出來卻是ABCDEF } } 問5 想請問 *str++ 和 (*str)++有何不同謝謝 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 36.224.59.124

→

xluds24805

09/23 22:48, , 1^F

09/23 22:48, 1^F

→

xluds24805

09/23 22:49, , 2^F

09/23 22:49, 2^F

→

SNSDpk5566

09/23 22:49, , 3^F

09/23 22:49, 3^F