C program to Reverse a Sentence Using Recursion

In this example, you will learn to take a sentence from the user and reverse it using recursion.

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To understand this example, you should have the knowledge of the following C programming topics:

• C Functions
• C User-defined functions
• C Recursion

Reverse a sentence using recursion

#include 
void reverseSentence();
int main() {
    printf("Enter a sentence: ");
    reverseSentence();
    return 0;
}

void reverseSentence() {
    char c;
    scanf("%c", &c);
    if (c != '\n') {
        reverseSentence();
        printf("%c", c);
    }
}

Output

Enter a sentence: margorp emosewa
awesome program

This program first prints Enter a sentence: . Then, the reverseSentence() function is called.

This function stores the first letter entered by the user in c. If the variable is any character other than \n (newline), reverseSentence() is called again.

This process goes on until the user hits enter.

When the user hits enter, the reverseSentence() function starts printing characters from last.