我今天为招聘新员工出的C语言考题

cooper_chu

这个帖子不顶亏大了：)

SKyPP

有道理，那我也顶一下

caoxl

出一个小陷阱，玩一个小把戏，就是招高级程序员？？？你知道高级程序员高在哪吗？
只要心细，越是新手越会做这样的弱智题，
真为答对了这题的所谓“高级程序员们”捏把汗！
也为真有高级程序员本事的人在你公司窝着而心痛！

不服气的来mail,DY教教你们！

weiaihong

这到题不难啊~!
只是太眼人耳目了

lucifer

所谓高级程序员就是可以拿到高薪的程序员
其他一切标准都是shit

marship

(gdb) list
1       int main(void)
2       {
3       int var1=0;
4       char var2=0;
5       int var3=0;
6       char str_val1[]="24\n";
7       char str_val2[]="32\n";
8       char str_val3[]="48\n";
9       sscanf(str_val1,"%d",&var1);
10      sscanf(str_val2,"%d",&var2);
(gdb) break 5
Breakpoint 1 at 0x8048377: file test.c, line 5.
(gdb) run
Starting program: /home/macroheart/test

Breakpoint 1, main () at test.c:5
5       int var3=0;
(gdb) display var3
1: var3 = 134513666
(gdb) display var2
2: var2 = 0 '\0'
(gdb) display var1
3: var1 = 0
(gdb) next
6       char str_val1[]="24\n";
3: var1 = 0
2: var2 = 0 '\0'
1: var3 = 0
(gdb) next
7       char str_val2[]="32\n";
3: var1 = 0
2: var2 = 0 '\0'
1: var3 = 0
(gdb) next
8       char str_val3[]="48\n";
3: var1 = 0
2: var2 = 0 '\0'
1: var3 = 0
(gdb) display str_val1
4: str_val1 = "24\n"
(gdb) display str_val2
5: str_val2 = "32\n"
(gdb) display str_val3
6: str_val3 = "\024\n\023B"
(gdb) next
9       sscanf(str_val1,"%d",&var1);
6: str_val3 = "48\n"
5: str_val2 = "32\n"
4: str_val1 = "24\n"
3: var1 = 0
2: var2 = 0 '\0'
1: var3 = 0
(gdb) next
10      sscanf(str_val2,"%d",&var2);
6: str_val3 = "48\n"
5: str_val2 = "32\n"
4: str_val1 = "24\n"
3: var1 = 24
2: var2 = 0 '\0'
1: var3 = 0
(gdb) next
11      sscanf(str_val3,"%d",&var3);
6: str_val3 = "48\n"
5: str_val2 = "32\n"
4: str_val1 = "24\n"
3: var1 = 0
2: var2 = 32 ' '
1: var3 = 0
(gdb) next
12      printf("var1=%d,var2=%d,var3=%d\n",var1,var2,var3);
6: str_val3 = "48\n"
5: str_val2 = "32\n"
4: str_val1 = "24\n"
3: var1 = 0
2: var2 = 32 ' '
1: var3 = 48
(gdb) next
var1=0,var2=32,var3=48
13      }
6: str_val3 = "48\n"
5: str_val2 = "32\n"
4: str_val1 = "24\n"
3: var1 = 0
2: var2 = 32 ' '
1: var3 = 48
(gdb)

看的晚了点，不过挺有意思的，中间var1确被赋为24了，还有var2的初始值也和别人不一样，有点奇怪。谢谢！

northwindrocker

受教！！

sunnyboycaojp

第一次接触这种问题，太经典了，虽然到现在还想不明白，至少给了我思路

fly8000

长见识了！

fly8000

长见识了！