从字符串中提取数字进行加法运算

  1 #include<stdio.h>
  2 #include<stdlib.h>
  3 #include<string.h>
  4
  5 #define MAXLINE 100
  6 int main(int argc, char  *argv[])
  7 {
  8     char buf[MAXLINE];
  9     char arr[MAXLINE];
 10     int iCh;
 11     int i, j;
 12     int len = strlen(argv[1]);
 13     int sum = 0;
 14     i = 0;
 15     while(i < len)
 16     {
 17         iCh = atoi(&argv[1][i]);
 18         sum += iCh;
 19         sprintf(arr, "%d", iCh);
 20         j = strlen(arr);
 21         i += j;
 22     }
 23
 24     printf("sum : %d\n", sum);
 25     return 0;
 26 }