题解 | #计算某字母出现次数#

#include <stdio.h>
#include <string.h>

int main(void)
{
    char a[10000] = {0};
    fgets(a, sizeof(a),stdin);

    char c;
    scanf("%c", &c);
    getchar();

    int count = 0;

    int len = strlen(a);
    for(int i = 0;i < len;i++)
    {
        if(a[i] == c || a[i] == c + 32 || a[i] == c - 32)
            count++;
    }

    printf("%d\n",count);
    return 0;
}