Compilare: user.cpp: In function ‘void sol(int, int)’: user.cpp:8:13: warning: unused variable ‘a’ [-Wunused-variable] int i,j,a,b; ^ user.cpp:8:15: warning: unused variable ‘b’ [-Wunused-variable] int i,j,a,b; ^ user.cpp: In function ‘int main()’: user.cpp:91:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&m,&n,&p); ^ user.cpp:94:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&t[i][j]); ^ user.cpp:98:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&dx,&dy); ^