Compilare: user.cpp: In function ‘int main()’: user.cpp:146:56: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d %d %d %d", &N, &K, &X, &Y ); ^ user.cpp:149:70: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d %d %d", &V[i].cnt, &V[i].j, &V[i].k ); ^ user.cpp:154:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] ch = 0; fscanf( input_file, "\n%c", &ch ); ^ user.cpp:161:47: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d", &Z ); Z ++; ^ user.cpp:162:78: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d %d %d", &V[Z].cnt, &V[Z].j, &V[Z].k ); ^ user.cpp:167:68: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( input_file, "%d %d %d %d", &A, &B, &C, &D ); ^