C Program to Convert String into Lowercase

In this program, you'll learn to convert a given string into lowercase letters.

Source Code

#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char str[20];

    printf("Enter the string..\n");
    gets(str);

    for(i=0; str[i]!= '\0'; i++)
    {
        if(str[i] >= 'A' && str[i] <='Z')
        {
            str[i] = str[i] + 32;
        }
    }
    printf("\nString in LOWERCASE is..\n");
    puts(str);
    return 0;
}

Output

Enter the string..
I am very to learn code!

String in LOWERCASE is..
i am very to learn code!