Eroare de compilare: user.cpp:7:8: error: ‘int y1’ redeclared as different kind of symbol int x1,y1,x2,y2,k; ^ In file included from /usr/include/features.h:357:0, from /usr/include/i386-linux-gnu/c++/4.8/bits/os_defines.h:39, from /usr/include/i386-linux-gnu/c++/4.8/bits/c++config.h:420, from /usr/include/c++/4.8/cstdio:41, from user.cpp:1: /usr/include/i386-linux-gnu/bits/mathcalls.h:243:1: error: previous declaration of ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int main()’: user.cpp:19:39: warning: format ‘%d’ expects argument of type ‘int*’, but argument 4 has type ‘double (*)(double)throw ()’ [-Wformat=] fscanf(f,"%d %d %d %d",&x1,&y1,&x2,&y2); ^ user.cpp:20:17: error: invalid types ‘int [305][double(double)throw ()]’ for array subscript st=1;dr=v[x1][y1]; ^ user.cpp:25:23: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] col[1]=y1; ^ user.cpp:27:25: error: invalid types ‘int [305][double(double)throw ()]’ for array subscript x[x1][y1]=k; ^ user.cpp:15:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&q); ^ user.cpp:16:63: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (i=1;i<=n;i++) for (j=1;j<=n;j++) {fscanf(f,"%d",&v[i][j]);} ^ user.cpp:19:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d %d",&x1,&y1,&x2,&y2); ^