assume in a txt file, there are lines like below
123456 7890
123 456789
1234 567890
which have a space/tab to seperate them.
i would like to ask how to seperarte the line into two strings?
i.e sting1 = "123456", string2 ="7890"
(i think i can get each character and combine those characters in a string until i read a "space", but what function should i use to do the combine job?)
thank you for helping.
The extraction operator (>>) stops at whitespace.
numbers.txt
123456 7890
123 456789
1234 567890
Code:int six_numbers[6]; ifstream filein("numbers.txt"); int i; for(i=0; i<6; ++i){ filein >> six_numbers[i]; }
If you speak or are learning Spanish, check out this Spanish and English Dictionary, it is a handy online resource.
What happens is not as important as how you react to what happens. -Thaddeus Golas
in the program, you have told the program to do the job 6 times right?
but if the txt file update everyday and the number of lines is unknown, how to make the reading stop when it reach the end of the file?
Here's one way. Change the value of MAX_NUMBERS to whatever you think is reasonable.
-FuturaCode:const int MAX_NUMBERS = 1024; int six_numbers[MAX_NUMBERS]; ifstream filein("numbers.txt"); for(int i=0; i<MAX_NUMBERS && filein >> six_numbers[i]; ++i);
If you speak or are learning Spanish, check out this Spanish and English Dictionary, it is a handy online resource.
What happens is not as important as how you react to what happens. -Thaddeus Golas
Suppose you want to split the string at the point where the space occurs. The two substrings are being stored in string2 and string3, while string1 is the main string.
Code:#include<stdio.h> #include<string.h> #define MAX 50 int main() { char string1[MAX],string2[MAX],string3[MAX]; int ctr1,ctr2,ctr3; gets(string1); ctr1=0; while(string1[ctr1]!=' ') { string2[ctr1]=string1[ctr1]; ++ctr1; } ctr3=0; for(ctr2=ctr1+1; ctr2<strlen(string1); ++ctr2) { string3[ctr3]=string1[ctr2]; ++ctr3; } return(0); }
wonga
Compiler == Visual C++ 6.0"Come Out Fighting."
