Write a c program for swapping of two arrays ?

  Write a c program for swapping of two arrays?  
   #include<stdio.h>  
   int main()  
  {  
    int str1[100],str2[100],str3[100],i;  
    printf("Enter First array->");  
    for (i=0;i<100;i++)  
     scanf("%d",&str1[i]);  
    printf("\nEnter Second array->");  
    for (i=0;i<100;i++)  
          scanf("%d",&str2[i]);  
    printf("Arrays before swapping");  
    printf("\nFirst array->");  
    for (i=0;i<100;i++)   
     {  
    printf("%d",str1[i]);  
    }  
    printf("\nSecond array->");  
    for (i=0;i<100;i++)   
     {  
    printf("%d",str2[i]);  
    }  
    for (i=0;i<100;i++)  
         {  
    str3[i]=str1[i];  
    str1[i]=str2[i];  
    str2[i]=str3[i];  
    }  
    printf("\nArrays after swapping");  
    printf("\nFirst array->");  
    for (i=0;i<100;i++)  
         {  
    printf("%d",str1[i]);  
    }  
    printf("\nSecond array->");  
    for (i=0;i<100;i++)   
          {  
    printf("%d",str2[i]);  
    }  
    return 0;  
   }