Eroare de compilare: user.cpp:6:32: error: ‘int y1’ redeclared as different kind of symbol int intre[25][25],i,j,N,M,y,x1,y1,x2,y2,L[25][25]; ^ 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:20:15: error: assignment of function ‘double y1(double)’ y1=(j-1)/M+1; ^ user.cpp:20:15: error: cannot convert ‘int’ to ‘double(double)throw ()’ in assignment user.cpp:24:18: error: invalid operands of types ‘int’ and ‘double(double)throw ()’ to binary ‘operator-’ b=y2-y1; ^ user.cpp:37:22: warning: pointer to a function used in arithmetic [-Wpointer-arith] y=y1-1; ^ user.cpp:37:21: error: invalid conversion from ‘double (*)(double)throw ()’ to ‘int’ [-fpermissive] y=y1-1; ^ user.cpp:41:27: error: invalid operands of types ‘int’ and ‘double(double)throw ()’ to binary ‘operator-’ x=((y-y1)/b)*a+x1; ^ user.cpp:74:21: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘long long int’ [-Wformat=] fprintf(g,"%d",S); ^ user.cpp:13:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&N,&M); ^