Converting string to integer

#1

here can we convert numeric string to integer like this but it is not producing correct output :-
int ans = 0;
int p = 1;
for(int i=0; i<=s.length()-1; i++){
ans = (s[i]-‘0’) + ans * p;
p *= 10;
}
Please tell what is wrong in this

#2

Hey @Sakshi2004

#3

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