Compilare: user.cpp: In function ‘void find_objects()’: user.cpp:40:13: warning: unused variable ‘nrObjectsFound’ [-Wunused-variable] int nrObjectsFound = 0; ^ user.cpp:37:9: warning: unused variable ‘freeLines’ [-Wunused-variable] int freeLines = 0; ^ user.cpp: In function ‘int main()’: user.cpp:130:23: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> mat[i] + 1; ^ user.cpp:144:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i ++) ^ user.cpp:127:10: warning: unused variable ‘c’ [-Wunused-variable] char c; ^ user.cpp: In function ‘void find_obstacles()’: user.cpp:55:83: warning: ‘objectLine’ may be used uninitialized in this function [-Wmaybe-uninitialized] return mus[secondObj].lastLine - (secondObjLine - 1 + (mus[firstObj].lastLine - firstObjLine)); ^ user.cpp:60:18: note: ‘objectLine’ was declared here int lastObj, objectLine; ^