Practice Program






  • Program to convert string with lowercase letter.

    • Solution: 
    void main()
{
    int i;
    char s[20];

    printf("Enter the string: ");
    gets(s);

    printf("String is: ");
    puts(s);




    for(i=0; s[i]!='\0'; i++)
    {
         if(isupper(s[i])==1){//checking the character is in uppercase or lowercase letter.
            s[i] = s[i] + 32;//if character is in uppercase then
    }                       //we are changing it into lowercase character.


}
 printf("String in lower case letters is: ");
    puts(s);
}

    Output1
    Enter the string: PROGRAMMER

    String is PROGRAMMER
    String in lower case letters is: programmer

    Output2
    Enter the string: PROGRAMMERDOUTS

    String is PROGRAMMERDOUTS
    String in lower case letters is: programmerdouts

    Output3
    Enter the string: code

    String is code
    String in lower case letters is: code






    defining a function 'to_lowercase' which will convert string in lower case letter.

    void to_lowercase(char s[])
{
    int i;

    for(i=0;s[i] != '\0';i++)
    {
        if(isupper(s[i])==1){
            s[i] = s[i] + 32;
      }
    }

}

    Using above define function 'to_lowercase()': 
    void main()
{
    char s[20]  = "CODE";

    to_lowercase(s);
    printf("String in lower case letters is: ");
    puts(s);
}

    Output1
    String in lower case letters is: code

    Using above define function 'to_lowercase()': 
    void main()
{
    char s[20]  = "PROGRAMMER";

    to_lowercase(s);
    printf("String in lower case letters is: ");
    puts(s);
}

    Output2
    String in lower case letters is: programmer

    Using above define function 'to_lowercase()': 
    void main()
{
    char s[20]  = "COMPUTER";

    to_lowercase(s);
    printf("String in lower case letters is: ");
    puts(s);
}

    Output3
    String in lower case letters is : computer