Compilare: user.cpp: In function ‘int main()’: user.cpp:46:10: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(sum>=0) ^ user.cpp:12:14: warning: unused variable ‘sol’ [-Wunused-variable] int k,s,n,sol,rez,p2,i,j,con,sum,x; ^ user.cpp:12:37: warning: unused variable ‘x’ [-Wunused-variable] int k,s,n,sol,rez,p2,i,j,con,sum,x; ^ user.cpp:15:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d" ,&k,&s,&n); ^ user.cpp:18:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&mat[i][j]); ^