The need:
This program in some places we need to reverse the given string like in next post (binary conversion). This program asks the user for a string, reverses that and prints back.
This program in some places we need to reverse the given string like in next post (binary conversion). This program asks the user for a string, reverses that and prints back.
The code:
--------------------------------------------
#include<stdio.h>
#include<string.h>
main()
{
int i=0,length;
char c,str[50];
printf("Enter a string => ");
gets(str);
length=strlen(str);
for(i=0;i<length/2;i++)
{
c=str[i];
str[i]= str[length-1-i];
str[length-1-i]=c;
}
printf("\nreversed string is => ");
puts(str);
getchar();
}--------------------------------------------The approach:
Hello Sir,
ReplyDeleteI am trying to print a string without the spaces but the output i get is only the first word of the string i enter.Can you please point out the flaw in my code
#include
int main()
{
char a[100],b[100];
printf("enter any string \n");
scanf("%s",a);
int i=0;
while (a[i]!='\0')
{
if(a[i]!=' ')
b[i]=a[i];
i++;
}
b[i]='\0';
printf("string without spaces : %s \n",b);
return 0;
}
Thank you
you need to know one thing about string(character array) in C which is: "the '\0' or NULL character is used to indicate end of the string."
DeleteHence the flaw is:
you are replacing all ' ' with '\0' which is replaced successfully in the memory but when it comes to printing program starts to print the string character by character. When the first word finishes there it finds '\0' in your case. It assumes string end and stops further printing.
further tip:
To remove spaces in addition to 'i' use one more counter say 'j' and do not replace ' ' with '\0' just skip copying it.