include include int charToInt (char stringNumber){return stringNumber – ‘0’;} int main (){char first_number[] = “55”;char second_number[] = “166”;char sum_string[500], str, sum_string_rev[500];int _first_number, _second_number;int sum, first_number_length, second_number_length, carry, count_up_to;first_number_length = strlen (first_number);second_number_length = strlen (second_number); count_up_to = first_number_length>second_number_length? first_number_length: second_number_length;carry = 0;int j=0;for(int i=count_up_to-1; i>=0;i–,j++){_first_number = 0;_second_number = 0;if(j<first_number_length){_first_number = charToInt(first_number[first_number_length-j-1]);} } if(carry){sum_string[j] = carry +...
