c++ - fstream Reading numeric output from a file and outputting the sum to another file -

i trying read file in format of

gerry $300

thom $500

gus $700

and attempting output total amount of money file.

how go this? appreciated!

define input file stream , open file

ifstream file("file directory"); 

now we'll read line line need string save each line

string line; 

getline function return false when reaches end of file

while(getline(file,line)){            // can use string stream divide string according spaces           istringstream ss(line); //now contains line           string word;            //now every time ss>>word next word after space can make loop , stop @ index of word u  while(ss>>word){ //some code stop when find word    } 

} make variable , keep adding numbers , print output file stream