Answer Posted / namrata

In while first condition is checked if condition is not true
then while don't work and not give output but in do while
loop condition is checked when loop is worked at one time
and if the condition is not true then at least one time it
gives output it is the main difference between while & do
while loop.

.main() { char *p = "hello world!"; p[0] = 'H'; printf("%s",p); }

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