Which of the following is not a valid declaration for a character string?
a) char string1[3] = {“1”, “2”, ‘3’, 4}
b) char string1[12];
c) char string1[] = “this is a string”;
d) char string1[25] = “this is a string”;

a) char string1[3] = {“1”, “2”, ‘3’, 4}

Explanation:

In the declaration we have a string of size 3 from which 1 block is reserved for null character and we are declaring a string of size 4 and out them two are of type string and 1 is a character and 1 is an integer.

All the other three declarations are correct they will run on the IDE.

So we can say that the answer to this question is option a.

this does not make any sense.. i you can reword that i can maybe you