CODE IS HERE;
#include "stdio.h"
#include "string.h"
long a[401][401];
long n,h,t;
long i,j,m;
int  c[500];
int  p[500];

long count=0;
void bfs(int i)
{
    int k;
    for(k=1;k<=n;k++)
    {
        if(c[k]==0)
        {
            if(a[i][k]==1)
              {
                a[i][k]=0;
                a[k][i]=0;
                c[k]=1;
                p[k]=i;
                bfs(k);
               }
        }
    }

}


void path(int a1,int a2)
{
    int q[500];
    int i=0;
    while(1)
    {
        q[i]=a2;
        i++;
        a2=p[a2];
        if(a2==a1) break;
    }
    printf("%d",i+1);
    printf(" %d",a1);
    while(i>0)
    {
        printf(" %d",q[i-1]);
        i--;
    }
    printf("\n");


}



void main()
{
    for(i=0;i<401;i++)
        for(j=0;j<401;j++)
            a[i][j]=0;
    scanf("%ld %ld",&n,&m);
    for(i=0;i<m;i++)
    {
        scanf("%ld %ld",&h,&t);
            a[h][t]=1;
            a[t][h]=1;
    }
    for(i=1;i<=n;i++)
        c[i]=0;

    c[1]=1;
    bfs(1);

    for(i=1;i<n;i++)
    {
        for(j=i+1;j<=n;j++)
            if(a[i][j]==1)
            {
                count++;
            }
    }
    printf("%ld\n",count);
    for(i=1;i<n;i++)
    {
        for(j=i+1;j<=n;j++)
            if(a[i][j]==1)
            {
                path(i,j);
            }
    }

}

I have same problem and increased answer's array.
got AC

Try this
7 8
1 2
2 6
1 6
4 6
4 3
3 5
5 6
3 7