'commit'

C++专题课程/基础知识/统计个数（数字、字符、其它字符）.cpp

@@ -0,0 +1,42 @@
+#include<bits/stdc++.h>
+using namespace std;
+#define MAX 1024
+void cal_num(char *str, int count[]) {
+	char *pstr;
+	pstr=str;
+	while(*pstr) { /* *pstr != 0 */
+		if(*pstr>='0' && *pstr<='9')
+			count[0]++;
+		else if((*pstr>='a' && *pstr<='z') || (*pstr>='A' && *pstr<='Z'))
+			count[1]++;
+		else
+			count[2]++;
+		pstr++;
+	}
+}
+int main() {
+	char str[MAX];
+	int i, count[3];  /* 0->num; 1->char; 2->others */
+	memset(count, 0, 3*sizeof(int));
+
+	printf("Enter a string: ");
+	//scanf("%s", str);
+	scanf("%[^\n]",str); //<2F><><EFBFBD><EFBFBD>'\n'<27><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ
+	cal_num(str, count);
+	for(i=0; i<3; i++) {
+		switch(i) {
+			case 0:
+				printf("num: %d\n", count[i]);
+				break;
+			case 1:
+				printf("char: %d\n", count[i]);
+				break;
+			case 2:
+				printf("other: %d\n", count[i]);
+				break;
+		}
+	}
+	return 0;
+}
+
+