两道简单的程序，那位帮忙在linux下运行一下结果,谢谢啦，给分20。

 1<stdio.h>   
 2main()   
 3{   
 4int status;   
 5int tochild[2];   
 6char *msg="what is this program doing";   
 7char *argv[]={"/usr/bin/wc","-w",null};   
 8  
 9pipe(tochild);   
10  
11if ( fork()==0 )   
12{   
13close(tochild[1]);   
14dup2(tochild[0],0);   
15close(tochild[0]);   
16  
17execv(argv[0],argv);   
18exit(1);   
19}   
20  
21close(tochild[0]);   
22write(tochild[1],msg,strlen(msg));   
23close(tochild[1]);   
24  
25wait(&amp;status);   
26}   
27  
28二：   
29  
30#include <stodio.h>   
31main()   
32{   
33int status;   
34char *argv[]={"/usr/bin/wc","-1","execWc.c",null};   
35if (fork()==0) {   
36execv(argv[0],argv);   
37exit(1);   
38}   
39wait(&amp;status);   
40}   
41  
42呵呵，有些地方搞不明白啊，   
43char *argv[]={"/usr/bin/wc","-1","execWc.c",null};   
44char *argv[]={"/usr/bin/wc","-w",null};   
45这两行代码的完整表达形式是什么呢，-l和-w这两个参数是什么意思？   
46  
47第一个运行后标准输出答案是“1 5 22” 还是 “1 5 26”？   
48linux下和unix下的结果会不同吗？   
49  
50第二个呢，运行结果是什么啊，呵呵。   
51  
52谢谢啦。   
53  
54\---------------------------------------------------------------   
55  
56a.c: In function `main':   
57a.c:7: `null' undeclared (first use in this function)   
58a.c:7: (Each undeclared identifier is reported only once   
59a.c:7: for each function it appears in.)   
60  
61  
62  
63a.c:7: `null' undeclared (first use this function)   
64a.c:7: (Each undeclared identifier is reported only once for each   
65function it appears in.)   
66a.c:9: `pipe' undeclared (first use this function)   
67a.c:11: `fork' undeclared (first use this function)   
68a.c:13: `close' undeclared (first use this function)   
69a.c:14: `dup2' undeclared (first use this function)   
70a.c:17: `execv' undeclared (first use this function)   
71a.c:18: `exit' undeclared (first use this function)   
72a.c:22: `strlen' undeclared (first use this function)   
73a.c:22: `write' undeclared (first use this function)   
74a.c:25: `wait' undeclared (first use this function)   
75\---------------------------------------------------------------   
76  
77看清楚了, 我不得不佩服你的错字能力   
78  
79#include <stdio.h>   
80main()   
81{   
82int status;   
83char *argv[]={"/usr/bin/wc","-l","execWc.c", NULL};   
84if (fork()==0) {   
85execv(argv[0],argv);   
86exit(1);   
87}   
88wait(&amp;status);   
89}   
90  
91[la0wang@GateWay la0wang]$ gcc -o execWc execWc.c   
92[la0wang@GateWay la0wang]$ ./execWc   
9312 execWc.c   
94[la0wang@GateWay la0wang]$   
95  
96说明:   
97  
98wc 是 *nix下一个计算文件大小, 行数等等的一个应用程序, -l(注意不是-1) 参数的意思是计算execWc.c 文件的行数   
99argv[]的意思你既然明白了, 我也懒的说了, 不过写程序还是推荐要严谨一些</stdio.h></stodio.h></stdio.h>