Eroare de compilare: user.cpp:5:18: error: ‘int y1’ redeclared as different kind of symbol int L, C, K, x1, y1, x2, y2, park[51][51], visited[51][51]; ^ In file included from /usr/include/features.h:367:0, from /usr/include/assert.h:35, from /usr/include/c++/5/cassert:43, from /usr/include/x86_64-linux-gnu/c++/5/32/bits/stdc++.h:33, from user.cpp:1: /usr/include/bits/mathcalls.h:251:1: note: previous declaration ‘double y1(double)’ __MATHCALL (y1,, (_Mdouble_)); ^ user.cpp: In function ‘int BFS(std::pair<int, int>)’: user.cpp:36:18: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] if(I < 1 | I > L | J < 1 | J > C | visited[I][J]) ^ user.cpp:36:34: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] if(I < 1 | I > L | J < 1 | J > C | visited[I][J]) ^ user.cpp:36:42: warning: suggest parentheses around comparison in operand of ‘|’ [-Wparentheses] if(I < 1 | I > L | J < 1 | J > C | visited[I][J]) ^ user.cpp: In function ‘int main()’: user.cpp:53:65: warning: format ‘%d’ expects argument of type ‘int*’, but argument 6 has type ‘double (*)(double) throw ()’ [-Wformat=] scanf("%d %d %d %d %d %d %d", &L, &C, &K, &x1, &y1, &x2, &y2); ^ user.cpp:63:30: error: could not convert ‘{x1, y1}’ from ‘<brace-enclosed initializer list>’ to ‘std::pair<int, int>’ printf("%d", BFS({x1, y1})); ^ user.cpp: In function ‘int BFS(std::pair<int, int>)’: user.cpp:46:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:50:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kdrum.in", "r", stdin); ^ user.cpp:51:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("kdrum.out", "w", stdout); ^ user.cpp:53:66: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d %d %d %d", &L, &C, &K, &x1, &y1, &x2, &y2); ^ user.cpp:59:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &park[i][j]); ^