View Code of Problem 3496

#include <stdio.h>
#include <string.h>
int main(){
  char s[1000];
  while(scanf("%s",s)!=EOF){
    int len =strlen(s);
    for(int i=0;i<len;i++){
      if(a[i]=='y'&&a[i+1]=='o'&&a[i+2]=='u'){
        printf("we");
        i=i+2;
      }else{
        printf("%c",a[i]);
      }
    }
    printf("\n");
  }
}
/*
F:\temp\22444891.119382\Main.c: In function 'main':
F:\temp\22444891.119382\Main.c:9: error: 'a' undeclared (first use in this function)
F:\temp\22444891.119382\Main.c:9: error: (Each undeclared identifier is reported only once
F:\temp\22444891.119382\Main.c:9: error: for each function it appears in.)
*/