Compilare: main.cpp: In function 'int main()': main.cpp:25:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j=1; j<=n; ++j) ^~~ main.cpp:33:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' for(i=1;i<=n; ++i) { ^~~ main.cpp:6:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("royfloyd.in", "r", stdin); ^ main.cpp:7:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("royfloyd.out", "w", stdout); ^ main.cpp:11:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ main.cpp:22:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &distances[i][j]); ^