gdb命令整理

Microsoft Windows XP [版本 5.1.]
(C) 版权所有 - Microsoft Corp.

C:\Documents and Settings\Administrator>e:

E:\>dir
 驱动器 E 中的卷没有标签。
 卷的序列号是 000A-A2B1

 E:\ 的目录

--  :    <DIR>          ADSafe
--  :    <DIR>          OIPackages
--  :    <DIR>          QQ
--  :    <DIR>          sougou
                个文件               字节
                个目录 ,,, 可用字节

E:\>cd OIPackages

E:\OIPackages>cd Dev-Cpp

E:\OIPackages\Dev-Cpp>cd MinGW32

E:\OIPackages\Dev-Cpp\MinGW32>cd bin

E:\OIPackages\Dev-Cpp\MinGW32\bin>g++ -g e:\a.cpp -o a
g++: e:\a.cpp: No such file or directory
g++: no input files

E:\OIPackages\Dev-Cpp\MinGW32\bin>g++ -g f:\a.cpp -o a

E:\OIPackages\Dev-Cpp\MinGW32\bin>gdb a
GNU gdb 6.8
Copyright (C)  Free Software Foundation, Inc.
License GPLv3+: GNU GPL version  or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-mingw32"...
(gdb) l
                      return pos==a.pos?r<a.r:pos<a.pos;
              }
      }b[N];
      int n,m,l,r,a[N],f[N];
      ll res,ans1[N],ans2[N];
      ll gcd(ll a,ll b){
              if(!b) return a;
              return gcd(b,a%b);
      }
      int main(){
(gdb)
              //freopen("hose.in","r",stdin);
              //freopen("hose.out","w",stdout);
              n=read();m=read();
              for(int i=;i<=n;i++) a[i]=read();
              int k=sqrt(n*1.0)+0.5;
              for(int i=;i<=m;i++){
                      b[i].l=read();b[i].r=read();
                      b[i].t=i;b[i].pos=b[i].l/k;
              }
              sort(b+,b+m+);
(gdb)
              memset(f,,sizeof f);
              l=;r=;res=;
              for(int i=;i<=m;i++){
                      while(r>b[i].r){
                              res-=(ll)f[a[r]]-;
                              f[a[r]]--;
                              r--;
                      }
                      while(r<b[i].r){
                              r++;
(gdb)
                              f[a[r]]++;
                              res+=(ll)f[a[r]]-;
                      }
                      while(l>b[i].l){
                              l--;
                              f[a[l]]++;
                              res+=(ll)f[a[l]]-;
                      }
                      while(l<b[i].l){
                              res-=(ll)f[a[l]]-;
(gdb)
                              f[a[l]]--;
                              l++;
                      }
                      ans1[b[i].t]=res;
                      ans2[b[i].t]=(ll)(r-l+)*(r-l)/;
              }
              for(int i=;i<=m;i++){
                      if(!ans1[i]){
                              puts("0/1");
                              continue;
(gdb)
                      }
                      ll gg=gcd(ans1[i],ans2[i]);
                      printf("%lld/%lld\n",ans1[i]/gg,ans2[i]/gg);
                      //printf("%I64d/%I64d\n",ans1[i]/gg,ans2[i]/gg);
              }
              return ;
      }(gdb)
Line number  out of range; f:\a.cpp has  lines.
(gdb)
Line number  out of range; f:\a.cpp has  lines.
(gdb) b
Breakpoint  at 0x40178a: file f:\a.cpp, line .
(gdb) b if i=
No default breakpoint address now.
(gdb) n
The program is not being run.
(gdb) s
The program is not being run.
(gdb) continue
The program is not being run.
(gdb) p i
No symbol "i" in current context.
(gdb) p n
$ =
(gdb) p *a@N
$ = { <repeats  times>}
(gdb) display i
No symbol "i" in current context.
(gdb) i b
Num     Type           Disp Enb Address    What
       breakpoint     keep y   0x0040178a in main at f:\a.cpp:
(gdb) set i=
Ambiguous set command "i=100": .
(gdb) p gcd(,)
You can't do that without a process to debug.
(gdb)

未完待续