题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
int main() { char a, b, s[500];
int main() { char a, b, s[500]; int i = 0, j, m = 0, len = 0; while ((a = getchar()) != '\n') { s[i] = a; for (j = 0; j < i; j++) { if (s[j] == a) { m++; } } if (m == 0) { len++; } i++; m=0; } printf("%d", len); return 0; } } i++; m=0; } printf("%d", len); return 0;