strcat Vs strncat - When should which function be used?

Question

Some static code analyzer tools are suggesting that all strcat usage should be replaced with strncat for safety purpose?

In a program, if we know clearly the size of

Answer 1

It's very simple strcat is used to concatenate two strings , for example

String a= data 
String b = structures 

If use perform strcat

Strcat(a, b) 

then

a= data structures

But if you want to concatenate specific numer of word r elements then you can use strncat Example if you want to concatenate only the first two alphabet lts of b into a then you have to write Strncat(a,b,2) (It means that you just cancatenate the fist two alphabets of b into a , and a becomes a = data st