can，can，need

解题思路:

#define _CRT_SECURE_NO_WARNINGS

#include<stdio.h>

#include<stdlib.h>

#include<string.h>

int main()

{

int i, j, n,t,k,m=1;

char a[100];

char b;

int sum[100];

int maxsum;

while (~scanf("%s", a))

{

n = strlen(a);

for (i = 0;i < n;i++)

{

b = a[i];

t = i;

for (j = i;j < n;j++)

{

if ((a[j] == b) && (a[j + 1] != b))

{

k = j;

}

}

sum[i] = k - t+1;

}

maxsum = sum[0];

for (i = 0;i < n;i++)

{

if (maxsum < sum[i])

{

maxsum = sum[i];

}

}

m++;

}

printf("%d\n", maxsum);

return 0;

}

注意事项:

参考代码: