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Write a C program to convert uppercase to lowercase letters without using string convert function
Before going to know about how to convert upper case to lower case letters without string convert function.
Let us have a look on program to convert upper to lower using convert function, then you will get a clarity on what we are doing in the program −
Example
#include <stdio.h>
#include <string.h>
int main(){
char string[50];
printf("enter a string to convert to lower case
");
gets(string); /reading the string
printf("The string in lower case: %s
", strlwr(string)); //strlwr converts all upper to
lower
return 0;
}Output
enter a string to convert to lower case CProgramming LangUage The string in lower case: cprogramming language
Now let's see the program to convert upper to lower without using predefined function −
Example
#include<stdio.h>
void main(){
//Declaring variable for For loop (to read each position of alphabet) and string//
int i;
char string[40];
//Reading string//
printf("Enter the string : ");
gets(string);
//For loop to read each alphabet//
for(i=0;string[i]!='\0';i++){
if(string[i]>=65&&string[i]<=90){
string[i]=string[i]+32;
}
}
printf("The converted lower case string is : ");
puts(string);
}Output
Enter the string : TUTORIALSPOINT The converted lower case string is : tutorialspoint
Updated on: 09-Mar-2021
4K+ Views
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