[Linux]gdb调试

 1 exbot@ubuntu:~/CodeLearn/HelloWorld/src$ g++ -g main.cpp  2 exbot@ubuntu:~/CodeLearn/HelloWorld/src$ ./a.out
 3 Hello world!10
 4 exbot@ubuntu:~/CodeLearn/HelloWorld/src$ gdb a.out
 5 GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04
 6 Copyright (C) 2012 Free Software Foundation, Inc.  7 License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
 8 This is free software: you are free to change and redistribute it.  9 There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
10 and "show warranty" for details. 11 This GDB was configured as "x86_64-linux-gnu". 12 For bug reporting instructions, please see: 13 <http://bugs.launchpad.net/gdb-linaro/>...
14 Reading symbols from /home/exbot/CodeLearn/HelloWorld/src/a.out...done. 15 (gdb) list 16 1    #include<stdio.h>
17 2    #include<iostream>
18 3    using namespace std; 19 4    int main() 20 5 { 21 6        printf("Hello world!"); 22 7        //system("pause");
23 8        int a=0; 24 9        int b=10; 25 10        int sum=a+b; 26 (gdb) b 10
27 Breakpoint 1 at 0x400699: file main.cpp, line 10. 28 (gdb) run 29 Starting program: /home/exbot/CodeLearn/HelloWorld/src/a.out 
30 warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7ffff7ffa000
31 
32 Breakpoint 1, main () at main.cpp:10
33 10        int sum=a+b; 34 (gdb) print sum 35 $1 = 0
36 (gdb) print b 37 $2 = 10
38 (gdb) print a 39 $3 = 0
40 (gdb) next 41 11        printf("%d",sum); 42 (gdb) print sum 43 $4 = 10
44 (gdb) contine 45 Undefined command: "contine".  Try "help". 46 (gdb) continue
47 Continuing. 48 Hello world!10[Inferior 1 (process 5710) exited normally] 49 (gdb) quit