test 3

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int n,r,v,i,max=0,min=0,j;
    char str[7][50];
        do{
            printf("How many srting(4-7): ");
            scanf("%d",&n);

          }while(n<4||n>7);
          for(i=0;i<n;i++){
            do{
                printf("String %d",i+1);
                fflush(stdin);
                gets(str[i]);
                r = strlen(str[i]);
              }while(r<0||r>50);

          }
                printf("Output\n");
                for(i=0;i<n;i++){
                    printf("String %d ",i+1);
                    printf("%s",str[i]);
                    v = strlen(str[i]);
                    printf(" = %d\n",v);

                   }
                for(i=0;i<n;i++){
                    if(strlen(str[i])>strlen(str[max])){

                    max=i;
                }
                    if(strlen(str[min])>strlen(str[i]))
                    min=i;

                  }
                  printf("String \"%s\" is longer \n",str[max]);
                  printf("String \"%s\" is shortest \n",str[min]);
                  //j = strlen(str[max]);



                  for(i=strlen(str[max])-1;i>=0;i--){
                    printf("%c",str[max][i]);
                  }
   return 0;
}