Compilare: user.cpp: In function ‘int main()’: user.cpp:8:84: warning: variable ‘ok’ set but not used [-Wunused-but-set-variable] int m=0,n=0,a[101][101],k=0,i=0,j=0,s=0,sm=0,v[41],l=0,l1=0,l2=0,c1=0,c2=0,p=0,ok=1,c=0,x=0; ^ user.cpp:9:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&m,&n); ^ user.cpp:11:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (j=1;j<=n;j++) fscanf(f,"%d",&a[i][j]); ^ user.cpp:12:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&k); ^ user.cpp:15:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d%d%d",&l1,&c1,&l2,&c2,&p); ^