字符替换

#include <stdio.h>
void replace(char *s,char c1,char c2)
{
    for (int i = 0; s[i] != ‘\0‘; i++) {
        if (s[i] == c1) {
            s[i] = c2;
        }
    }
}

int main(int argc, const char * argv[]) {
    
    char str[100];
    char c1, c2;
    printf("请输入一段字符串\n");
    gets(str);
    
    printf("请输入需要替换的字符\n");
    scanf("%c",&c1);
    printf("请输入替换后的字符\n");
    //注意:清理输入缓冲区
    setbuf(stdin,NULL);
    scanf("%c",&c2);
    
    printf("原字符串为:%s\n",str);
    
    replace(str, c1, c2);
    
    printf("替换后的字符串为:%s\n",str);

    return 0;
}