C Program to read an English sentence and replace lowercase characters by uppercase and vice-versa.

Write a C program to read an English sentence and replace lowercase characters by uppercase and vice-verso. Output the given sentence as well as the case converted sentence on two different lines. Read more about C Programming Language .

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#include <stdio.h>
#include <ctype.h>
#include <conio.h>

void main()
{
char sentence[100];
int count, ch, i;

clrscr();

printf("Enter a sentencen");
for(i=0; (sentence[i] = getchar())!='n'; i++)
{
;
}

sentence[i]='