Write a program that does not use the inbuilt string functions to perform the following: 10m Jun2006
(i) To compare two strings
[codesyntax lang=”c”]
#include<stdio.h>
void main()
{
int str_cmp(char*,char*);
char Str1[50],Str2[50];
int val;
clrscr();
printf("\nENTER FIRST STRING TO COMPARE : ");
scanf("%s",&Str1);
printf("\nENTER SECOND STRING TO COMPARE : ");
scanf("%s",&Str2);
val=str_cmp(Str1,Str2);
if(val==0)
printf("\nSTR1 IS EQUAL TO STR2");
else if(val<0)
printf("\nSTR1 IS LESS TO STR2");
else if(val>0)
printf("\nSTR1 IS GREATER TO STR2");
getch();
}
int str_cmp(char *STR1,char *STR2)
{
int I,S1=0,S2=0,val=0,L1=0,L2=0;
{
while(*STR1)
{
L1++;
S1+=*STR1;
STR1++;
}
while(*STR2)
{
L2++;
S2+=*STR2;
STR2++;
}
if(L1==L2)
{
val=S1-S2;
printf("\n%d",val);
}
else if(L1<L2)
val=-1;
else if(L1>L2)
val=1;
}
return val;
}
[/codesyntax]
Screen Shots:
(ii) To copy a string
#include<stdio.h>
void main()
{
void str_copy(char*,char*);
char Str1[50],Str2[50];
int val;
clrscr();
printf(“\nENTER FIRST STRING TO COMPARE : “);
scanf(“%s”,&Str1);
str_copy(Str2,Str1);
printf(“\nSTR1 IS : %s”,Str1);
printf(“\nSTR2 IS : %s”,Str2);
getch();
}
void str_copy(char *STR2,char *STR1)
{
while(*STR1)
{
*STR2=*STR1;
STR1++;
STR2++;
}
*STR2=*STR1;
}
[codesyntax lang=”c”]
#include<stdio.h>
void main()
{
void str_copy(char*,char*);
char Str1[50],Str2[50];
int val;
clrscr();
printf("\nENTER FIRST STRING TO COMPARE : ");
scanf("%s",&Str1);
str_copy(Str2,Str1);
printf("\nSTR1 IS : %s",Str1);
printf("\nSTR2 IS : %s",Str2);
getch();
}
void str_copy(char *STR2,char *STR1)
{
while(*STR1)
{
*STR2=*STR1;
STR1++;
STR2++;
}
*STR2=*STR1;
}
[/codesyntax]
Screen Shots:
Design an algorithm, and write a program to find the factorial of a number using recursion. 10m Jun2006
Algorithm:
int fact(int NUM)
{
int RES;
if(NUM==1)
return(1);
else
RES=NUM*fact(NUM-1);
return(RES);
}
Solved program can be found on this link http://cssimplified.com/c-programming/a-c-program-to-find-the-factorial-of-a-number-using-recursion