Create 串的朴素模式匹配.c

串/串的朴素模式匹配.c

@@ -0,0 +1,56 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<stdbool.h>
+#define MAXLEN 255
+
+typedef struct{
+	char ch[MAXLEN];
+	int length;
+}SString;
+
+int Index(SString S,SString T){
+	int k = 1,i = k,j = 1;
+	while(i<=S.length&&j<=T.length){
+		if(S.ch[i]==T.ch[j]){
+			++i;
+			++j;
+		}else{
+			k++;
+			i = k;
+			j = 1;
+		}
+	}
+	if(j>T.length){
+		return k;
+	}else{
+		return 0;
+	}
+}
+
+//字符串赋值操作
+void assign(SString *S){
+	printf("请输入字符串：\n");	
+	char x;
+	int i = 1;
+	scanf("%c",&x);
+	while(x!='\n'){
+		S->ch[i] = x;
+		i ++;
+		scanf("%c",&x);
+	}
+	S->length = i-1;
+}
+//打印字符串
+void printString(SString S){
+	for(int i=1;i<=S.length;i++){
+		printf("%c",S.ch[i]);
+	}
+	printf("\n");
+}
+int main(){
+	SString S,T;
+	assign(&S);
+	assign(&T);
+	printf("匹配:%d",Index(S,T));
+	return 0;
+}