Compilare: user.cpp: In function ‘int main()’: user.cpp:108:9: warning: statement has no effect [-Wunused-value] k==0; ^ user.cpp:39:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%hu %hu %hu",&t,&n,&m); ^ user.cpp:43:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%hu %hu",&i,&j); ^ user.cpp:60:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%hu",&c); ^ user.cpp:63:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%hu",&i);date[1][i]++;c--; ^