c语言字符串替换

#include
void string_replace(char *string,int n,char ch1,char ch2);

int main(){

char string[] = "HelloWorld";
int n = strlen(string);
printf("%d\n",n);
string_replace(string,n,'l','G');
printf("%s\n",string);

return 0;
}
void string_replace(char *string,int n,char ch1,char ch2){
for(int i=0;iif(*(string+i)==ch1){
*(string+i) = ch2;
}
}
}