Compilare: user.cpp: In function ‘int main()’: user.cpp:8:54: warning: unused variable ‘t’ [-Wunused-variable] int n,c,i,j,s[51][51],a[51][51],b[51][51],k,p,ok,t; ^ 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",&n,&c); ^ 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",&s[i][j]); ^ user.cpp:16:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[i][j]); ^