Compilare: main.cpp: In function 'int main()': main.cpp:44:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for ( int i = 1; i <= n; ++i ) ^~~ main.cpp:48:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' return 0; ^~~~~~ main.cpp:17:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^ main.cpp:22:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &a[i][j]); ^