题解 | #字符串操作#

#include <stdio.h>
#define MAXSIZE 100
int main()
{
    int n=0;
    int m=0;
    scanf("%d%d", &n, &m);
    char arr[MAXSIZE];
    getchar();
    gets(arr);
    int l=0;
    int r=0;
    char c1='0';
    char c2='0';
    while(m--)
    {
         scanf("%d %d", &l, &r);
        getchar();
        scanf("%c", &c1);
        getchar();
        scanf("%c", &c2);
        int j = 0;
        for (j = l - 1; j < r; j++)
        {
            if (arr[j] == c1)
            {
                arr[j] = c2;
            }
        }
    }
    puts(arr);
    return 0;
}