C Exercise Example 96
Title:Calculate the number of occurrences of a substring in a string.
Program analysis:None.
Example
// Created by www.example.com on 15/11/9.
// Copyright © 2015 Example. All rights reserved.
//
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
int main()
{
int i,j,k,TLen,PLen,count=0;
char T[50],P[10];
printf("Please enter two strings, separated by Enter, the main string first and the substring second:\n");
gets(T);
gets(P);
TLen=strlen(T);
PLen=strlen(P);
for(i=0;i<=TLen-PLen;i++)
{
for(j=0,k=i;j<PLen&&P[j]==T[k];j++,k++)
;
if(j==PLen)count++;
}
printf("%d\n",count);
system("pause");
return 0;
}
The output of the above example after running is:
请输入两个字符串，以回车隔开，母串在前，子串在后： abca a 2other extensions