Compilare: main.cpp: In function 'int main()': main.cpp:32:17: warning: unused variable 'a' [-Wunused-variable] int a, b; ^ main.cpp:32:20: warning: unused variable 'b' [-Wunused-variable] int a, b; ^ main.cpp:48:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0; i + 1 < linii.size(); i++ ) { ~~~~~~^~~~~~~~~~~~~~ main.cpp:50:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while ( i + 1 < linii.size() && linii[ i + 1 ] == linii[ i ] ) { ~~~~~~^~~~~~~~~~~~~~ main.cpp:17:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &n ); ^ main.cpp:20:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d", &nr ); ^ main.cpp:33:59: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf( fin, "%d%d", &flori[i].x, &flori[i].y); ^