Compilare: user.cpp: In function ‘int cs1()’: user.cpp:69:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int cs2()’: user.cpp:93:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int cs3()’: user.cpp:117:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:122:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.cpp:125:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &a[i]); ^ user.cpp: In function ‘int cs1()’: user.cpp:67:16: warning: ‘p2’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol2=p2; ^ user.cpp:66:16: warning: ‘p1’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol1=p1; ^ user.cpp: In function ‘int cs2()’: user.cpp:91:16: warning: ‘p2’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol2=p2; ^ user.cpp:90:16: warning: ‘p1’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol1=p1; ^ user.cpp: In function ‘int cs3()’: user.cpp:115:16: warning: ‘p2’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol2=p2; ^ user.cpp:114:16: warning: ‘p1’ may be used uninitialized in this function [-Wmaybe-uninitialized] sol1=p1; ^