Compilare: user.cpp: In function ‘int main()’: user.cpp:71:23: warning: unused variable ‘o’ [-Wunused-variable] int ps=1,pi=1,o,o1,k; ^ user.cpp:71:25: warning: unused variable ‘o1’ [-Wunused-variable] int ps=1,pi=1,o,o1,k; ^ user.cpp:71:28: warning: unused variable ‘k’ [-Wunused-variable] int ps=1,pi=1,o,o1,k; ^ user.cpp:47:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d\n",&p); ^ user.cpp:48:36: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d\n",&n,&m,&t); ^ user.cpp:49:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d %d\n",&l,&c,&k,&s); ^ user.cpp:52:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&v3[i-1],&v3[i]); ^ user.cpp:56:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[i][j]); ^ user.cpp:44:18: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] int nr=0,n,i,j,l,c,p,m,t,k,s,lung,lung2,ok; ^