Compilare: user.cpp: In function ‘void solve3()’: user.cpp:405:20: warning: unused variable ‘j’ [-Wunused-variable] int i, j, a = 1, b = 1; ^ user.cpp: In function ‘void read1()’: user.cpp:131:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d", &n, &k, &c); ^ user.cpp:138:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &nr); ^ user.cpp: In function ‘void read2()’: user.cpp:264:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &c, &k); ^ user.cpp:268:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]); ^ user.cpp: In function ‘void read3()’: user.cpp:315:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d%d", &nrs, &c, &n); ^ user.cpp: In function ‘void readFile()’: user.cpp:431:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &p); ^