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#include<iostream> #include<fstream> #include<cmath> using namespace std; int transformer(string str) //changing number from string to int { int num = 0; for(int i=0;i<str.size();i++) num += (str[i]-'0')*pow(10,str.size()-i-1); return num; } string reverser(int num) //changing number from int to string { string num_char_inversed; string num_char; while((num/10)!=0) { num_char_inversed+=char(num%10+48); num/=10; } num_char_inversed+=char(num%10+48); for(int i=0;i<num_char_inversed.size();i++) num_char+=num_char_inversed[num_char_inversed.size()-i-1]; return num_char; } int main() { fstream fs; char buffer[256] = {}; string buffer_string = ""; string number_string = ""; int number=0,tag=0; int number_array[16] = {}; fs.open("exercise.txt",ios::in); fs.read(buffer, sizeof(buffer)); buffer_string = buffer; for(int i=0;i<buffer_string.size();i+=(number_string.size()+1)) { number_string=""; for(int j=i;buffer_string[j]>='0'&&buffer_string[j]<='9';j++) //get the number without space number_string+=buffer_string[j]; number=pow(transformer(number_string)+10,2); //transforming & calculating number_array[tag]=number; tag++; } buffer_string=""; for(int i=0;i<tag;i++) { buffer_string+=reverser(number_array[i]); //reversing buffer_string+=" "; } fs.close(); for(int i=0;i<buffer_string.size();i++) buffer[i] = buffer_string[i]; fs.open("exercise_output.txt",ios::out); fs.write(buffer, sizeof(buffer)); fs.close(); return 0; }
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