Compilare: user.c: In function ‘main’: user.c:7:19: warning: unused variable ‘k’ [-Wunused-variable] int m,n,p,i,j,k,minim,maxim,soiuri=0; ^ user.c:12:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d", &m,&n,&p); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.c:24:17: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d", &v[i][j]); ^~~~~~~~~~~~~~~~~~~~~~~~