In the following code:

char arr$()=(\text{'}$A$\text{'},\text{'}$b$\text{'},\text{'}$c$\text{'})$;

char $*$ptr$1$;

ptr$1=$ arr;

if i wanted to replace $\text{'}$c$\text{'}$ with $\text{'}$F$\text{'}$ how would i accomplish that