Compilare: main.cpp: In function 'int main()': main.cpp:14:55: warning: variable 'ok' set but not used [-Wunused-but-set-variable] long long int n,i,j,st,dr,mij,ok1,m,c,r,x,y,z,w,u,ok,suma,inc,sf,mij1; ^~ main.cpp:17:82: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld%lld%lld%lld%lld%lld%lld%lld%lld",&n,&m,&c,&r,&x,&y,&z,&w,&u); ^ main.cpp:19:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld",&a[1][i]); ^ main.cpp:22:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld",&a[i][1]); ^