C program to find non repeating characters in a string

Finding non repeating characters in a string.
In this article we will learn how to code a C program to find non repeating characters in a string. Non repeating characters are those that are present in the string only once. To find non repeating characters in a string we will use one for loop to calculate the frequency of each character and print those characters that have frequency count one using another for loop.

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printf("thank you so much \n");