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- // Tinh tong cac ki tu so co trong chuoi
- // Tim gia tri ki tu so sau do cong lai
- // Khai bao cac ham thu vien neu co
- #include<stdio.h>
- #include<conio.h>
- #include<string.h>
- int GetValue(char c)// lay gia tri so tu 0 den 9
- {
- int i = c - 48;
- if (i > 9 || i < 0) return 0;// kiem tra ki tu
- else return i;
- }
- int TongKyTuSo(char str[])
- {
- int result, temp;
- result = temp = 0;
- for (int i=0; str[i] != '\0'; i++)// tu dau chuoi den cuoi chuoi
- {
- temp = GetValue(str[i]);
- result += temp;// tong ki tu
- }
- return result;
- }
- void main()
- {
- char str[200+1];
- gets(str);
- printf("%d", TongKyTuSo(str));
- }
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