UVa 11713 Abstract Names Solution

#include<stdio.h>
#include<string.h>
int main()
{
int i,j,t,l1,l2,d;
char s1[100],s2[100];
while(scanf("%d",&t)==1)
{
scanf("\r");
for(i=0;i<t;i++)
{
gets(s1);
gets(s2);
l1=strlen(s1);
l2=strlen(s2);
if(l1!=l2)
{printf("No\n"); continue;}
else
for(j=0;j<l1;j++)
{
if(s1[j]!=s2[j])
{
if(s1[j]=='a' || s1[j]=='e' || s1[j]=='i' || s1[j]=='o' || s1[j]=='u')
{
if(s2[j]=='a' || s2[j]=='e' || s2[j]=='i' || s2[j]=='o' || s2[j]=='u') d=1;
else
{printf("No\n");
break;}
}
else
{printf("No\n");
break;}
}
if(j==l1-1)
{printf("Yes\n");
break;}
}

}
}
}