Compilare: user.cpp: In function ‘int main()’: user.cpp:7:42: warning: unused variable ‘c1’ [-Wunused-variable] int ans, nrlin, nrcol, i, j, l1, l2, c1, c2, sc, smax; ^ user.cpp:7:46: warning: unused variable ‘c2’ [-Wunused-variable] int ans, nrlin, nrcol, i, j, l1, l2, c1, c2, sc, smax; ^ user.cpp:11:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &nrlin, &nrcol); ^ user.cpp:12:80: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(i=1; i<=nrlin; i++) for(j=1; j<=nrcol; j++) fscanf(fin, "%d", &s[i][j]); ^