Questions about replacing "\0"

陈近南

I declared an array of strings,
char a [30]
After I enter the string "abcd", the system automatically adds\0 to the end
Now I want to replace\0 with another character, a [4] = 'e'
But unsuccessful, how should I achieve it?

zphoenix

How could it be unsuccessful? Direct assignment is definitely possible. But do n’t forget to put a '\0' in the end

陈近南

I want to remove / 0, no more

40668477

When outputting a string, loop through the output one by one. See if this works.