Compilare: main.cpp: In function 'int main()': main.cpp:18:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < sizeof(v)/4; j++) ~~^~~~~~~~~~~~~ main.cpp:13:21: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &t); ^ main.cpp:16:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &a, &b); ^