Says or Said

Both sentences are good! The only difference is that one is in present tense and the other is in past tense. Now take a look:

If the person says "My friend says that the food is good" That person states that all kind of food is good no matter what it is: Fish, oysters, salad, fruit, vegetables or wharever. All food is good.

If the person says "My friend said that the food is go

Both are correct. They both express your friend's opinon that the food is good.

Both sentences are good! The only difference is that one is in present tense and the other is in past tense. Now take a look:

If the person says "My friend says that the food is good" That person states that all kind of food is good no matter what it is: Fish, oysters, salad, fruit, vegetables or wharever. All food is good.

If the person says "My friend said that the food is go

In the proper context they are both right.

This one is right if the food you recently enjoyed or are now enjoying is good:

My friend says that the food is good.

If you are currently enjoying some food that your friend commented on at some time in the past:

My friend said that the food is good.

This is also possible. If you enjoyed some food in the past

thanks for your kindly explation ,exactly,no it's much clearly,some one if say something which include says,that's means at moment ,right now ,this is present tense,but if some one say something which include said,that's means some actitivly happenend in past.

Use the sequence of tenses in the second sentence.

My friend said, "The food is good."

My friend said that the food was good. (Past tense)

My friend said that the food was being good. (Past continuous/progressive tense)

My friend said that the food had been good. (Past perfect tense)