Compilare: user.cpp: In function ‘void Parse()’: user.cpp:49:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^ user.cpp:51:10: warning: unused variable ‘ch’ [-Wunused-variable] char ch; ^ user.cpp:55:9: warning: unused variable ‘length’ [-Wunused-variable] int length=strlen(S); ^ user.cpp:72:9: warning: unused variable ‘j’ [-Wunused-variable] int j=0,value=0; ^ user.cpp:72:13: warning: unused variable ‘value’ [-Wunused-variable] int j=0,value=0; ^ user.cpp:50:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&N,&M,&L,&C); ^ user.cpp:53:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%c",&S[i]); ^ user.cpp:78:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&val); ^ user.cpp: In function ‘int main()’: user.cpp:104:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("robot3.in","r",stdin); ^