Compilare: main.cpp: In function 'void citire()': main.cpp:11:9: warning: unused variable 'a' [-Wunused-variable] int a,b,c; ^ main.cpp:11:11: warning: unused variable 'b' [-Wunused-variable] int a,b,c; ^ main.cpp:11:13: warning: unused variable 'c' [-Wunused-variable] int a,b,c; ^ main.cpp:10:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&n,&m,&x,&y); ^ main.cpp:13:42: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&A[i],&B[i],&C[i]); ^ main.cpp: In function 'int main()': main.cpp:30:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sate.in","r",stdin); ^ main.cpp:31:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sate.out","w",stdout); ^