Trim leading white space characters from given string

Posted on Apr 22, 2020

C program to trim leading white space characters from given string.

Program

#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<stdlib.h>
#define MAX 50

void main()
{
	char str[MAX];
    int i, pos;

    printf("Enter the string\t:");
    gets(str);
    printf("\nOriginal String\t:%s",str);

    pos = 0;
    while(str[pos]==' ' || str[pos]=='\t')
    {
        pos++;
    }

    if(pos != 0)
    {
        i = 0;
        while(str[i+pos]!='\0')
        {
            str[i] = str[i+pos];
            i++;
        }
        str[i] = '\0';
    }

    printf("\nModified string\t:%s",str);

    getch();
}

Output

Enter the string        :         welcome to coursecrux.com

Original String :         welcome to coursecrux.com
Modified string :welcome to coursecrux.com