hello
I have the next question:
I can do as a clash of swords, for example in a rpg game to block an enemy attack.

I have the model of the sword and the character models, but nose com devido use as is for this purpose

If your asking on where to get the sound you can go to Open Game Art search sound effects they have one in the Rpg pack

no , no sound.
I am talking about any idea how to porgram this
i think something with c trace ...but waht and how

Use c_intersect or c_trace.
I dont See a problem here at all.

Yes, but thats not the problem. the problem is when i use differetns models for weapons ... the animation is diferent and the position is diferente respect to the player... the question is how can i make look the player use sowrds axe mace... when walk atack ...i hace the model of the player and the weapons but i dont konwn how to use to make the player can change the i dont konwn and look in his hand when walk atack or anithing

Use c_intersect while your sword animation plays. You can check every frame if the two models touch while moving. If they do, you have a collision between e.g. shield or player.

Lookup c_intersect in the manual.