删除指定字符 为什么只能删掉一个，其他符合的删不掉

Question

#include<stdio.h>
#include<string.h>
void DelChar(char *str,char c);
int main(){    
    char x;
    scanf("%c",&x);
    getchar();
    char a[100];
    gets(a);
    DelChar(a,x);
    puts(a);
    return 0;  
}
void DelChar(char *str,char c){
    int i,j,k;
    for(i=0;i<100;i++){
        if(str[i]==c){
            k=i;
            for(i=k;i<100;i++) 
                str[i]=str[i+1];    
            }
    }
}

Answer 1

#include<stdio.h>
#include<string.h>
void DelChar(char* str, char c);
int main() {
    char x;
    scanf("%c", &x);
    getchar();
    char a[100];
    gets_s(a);
    DelChar(a, x);
    puts(a);
    return 0;
}
void DelChar(char* str, char c) {
    int i, j, k;
    for (i = 0; i < 100; i++) {
        if (str[i] == c) {
            k = i;
            for (j = k; j < 100; j++)
                str[j] = str[j + 1];
        }
    }
}