Compilare: user.cpp: In function ‘int main()’: user.cpp:80:3: warning: statement has no effect [-Wunused-value] {k==0; ^ user.cpp:103:9: warning: statement has no effect [-Wunused-value] k==0; ^ user.cpp:37:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d",&t,&n,&m); ^ user.cpp:41:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&i,&j); ^ user.cpp:58:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&c); ^ user.cpp:61:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&i);date[1][i]++;c--; ^