Compilare: main.cpp: In function 'int main()': main.cpp:25:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &n, &m); ^ main.cpp:29:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &Heights[i]); ^ main.cpp:34:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &q); ^ main.cpp:39:80: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d%d%d", &startLine, &startColumn, &endLine, &endColumn); ^ main.cpp: In function 'int BinarySearch(int*, int, int, int)': main.cpp:12:9: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] int ans; ^~~ main.cpp: In function 'int main()': main.cpp:40:77: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] int pos1 = BinarySearch(Heights, startLine, endLine, startColumn) - 1; ^ main.cpp:41:75: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized] int pos2 = BinarySearch(Heights, startLine, endLine, endColumn) - 1; ^