Print toggle case using String in C

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This program is about to toggle case and print the given string using strings.

Source Code

#include<stdio.h>
int main()
{
  int i;
  char a[100];
  printf("\nEnter the String:");
  gets(a);
  printf("\nToggle String:");
  for(i=0;a[i]!='\0';i++)
  {
    if(a[i]>=97&&a[i]<=122)
    {
       a[i]-=32;
    }
    else if(a[i]>=65&&a[i]<=90)
    {
       a[i]+=32;
    }
  }
  for(i=0;a[i]!='\0';i++)
  {
    printf("%c",a[i]);
  }
  return 0;
}

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Output

Enter the String:tutorjoes
Toggle String:TUTORJOES

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