Compilare: user.cpp: In function ‘void probl2()’: user.cpp:125:10: warning: unused variable ‘R’ [-Wunused-variable] int R=100003; ^ user.cpp: In function ‘int main()’: user.cpp:172:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&l,&c); ^ user.cpp:173:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d%d%d",&xs,&ys,&xf,&yf); ^ user.cpp:175:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&nrvt); ^ user.cpp:182:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&vr[i].f,&vr[i].t); ^ user.cpp:192:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&nroz); ^ user.cpp:198:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&oz[i].f,&oz[i].t); ^