题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
#include <stdio.h> int main() { int ret[128] = {0}; char arr[510]; gets(arr); int i = 0; while(arr[i] != '\0') { if (arr[i] == '\n'){ break; } int tmp = arr[i]; ret[tmp] = 1; i++; } for (i = 1; i < 128; i++) { ret[0] += ret[i]; } printf("%d", ret[0]); return 0; }