Thread: Count numbers in string

Use sscanf() or strtol() on your input string.

Hallo Lolcoman!

May be you can use strtok() declared in string.h (also cstring)
you can see a example:

Code:

// splits a String into several parts
#include <stdio.h>  //printf
#include <stdlib.h> //atoi EXIT_SUCCESS
#include <string.h> // strcpy, strtok

// argument 1(*var)= strint to split
// argument 2=delimiter
// argument 2 = 2 dimensional array where the tokens are copied
// Return-Value: number of tokens where found
int mixed(char *var, char *delimiter, char numbers[20][30])
{
 
 printf ("the delimiter is: %s(space)\nTokens:\n", delimiter);
 
  int retval = 0, i = 0;
  char * d;
  d = strtok (var, delimiter);
  
  while (d != NULL)
  {
    strcpy(numbers[i], d); 
    printf ("i: %2d      String: %s\n", i, numbers[i]);
    i++;
    d = strtok (NULL, delimiter);
   retval++;
  }
 
 return retval;
}

int main(int argc, char **argv)
{
 char test[] = {"60 10 Winston Charly John 44 67 Henry 0 Mary-Jane_Lovley"};
 char delimiter[] = " ";
 char numbers[20][30] = {0};
 int ival = 0, i,j, result_a, sum = 0;
  
 printf ("String to split into tokens:\n%s\n\n", test);
 result_a =mixed(test, delimiter, numbers);
 
  
 printf ("\nNumber of tokens: %d\n-----tokens splited into characters-------\n", result_a);
 for (i = 0; i < result_a; i++)
  {
   printf("i: %2d     ", i);
    for (j = 0; j < 30; j++)
     printf(" %c ", numbers[i][j]);     
   printf("\n");
  }
  printf ("-----tokens converted into int-values------\n");
 
  for (i = 0; i < result_a; i++)
   {
    ival = atoi(numbers[i]);
    sum += ival;
    printf("ival: %d\n", ival);
   }
    
  printf("\nsum of all int-values:   %d\n\n", sum);
  
return EXIT_SUCCESS;
}

This code is not without failures because the argument number 3,
the char array must have enough size if you don't want to have a
overflow.

output of the example:

Code:

String to split into tokens:
60 10 Winston Charly John 44 67 Henry 0 Mary-Jane_Lovley

the delimiter is:  (space)
Tokens:
i:  0      String: 60
i:  1      String: 10
i:  2      String: Winston
i:  3      String: Charly
i:  4      String: John
i:  5      String: 44
i:  6      String: 67
i:  7      String: Henry
i:  8      String: 0
i:  9      String: Mary-Jane_Lovley

Number of tokens: 10
-----tokens splited into characters-------
i:  0      6  0                                                         
i:  1      1  0                                                         
i:  2      W  i  n  s  t  o  n                                               
i:  3      C  h  a  r  l  y                                                 
i:  4      J  o  h  n                                                     
i:  5      4  4                                                         
i:  6      6  7                                                         
i:  7      H  e  n  r  y                                                   
i:  8      0                                                           
i:  9      M  a  r  y  -  J  a  n  e  _  L  o  v  l  e  y                             
-----tokens converted into int-values------
ival: 60
ival: 10
ival: 0
ival: 0
ival: 0
ival: 44
ival: 67
ival: 0
ival: 0
ival: 0

sum of all int-values:   181

If you would change some things in 'mixed' you could
save directly the converted int-values into a int-array.
But that will be your work.
Sorry but my English is not very good, so i prefer to take examples.