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To replace a word by another word in a given string

Thursday, December 4th, 2008

#include<stdio.h>
#include<conio.h>
int stlen(char str[50])
{
int len = 0;
while(str[len]!=’′)
len++;
len–;
return len;
}
void stcat(char str1[50], char str2[50])
{
int i = 0,len = 0;
while(str1[len]!=’′)
len++;
while(str2[i]!=’′)
{
str1[len] = str2[i];
i++;
len++;
}
str1[len] = ‘′;
}
void main()
{
char str1[50], str2[50], str3[50], temp[50];
int len1, len2, len3, i, j, match, k;
clrscr();
printf(“nnt ENTER A SENTENCE…: “);
gets(str1);
len1 = stlen(str1);
printf(“nnt ENTER A STRING WHICH YOU WANT TO DELETE…: “);
gets(str2);
len2 = stlen(str2);
printf(“nnt ENTER A NEW STRING WHICH YOU WANT TO INSERT …: “);
gets(str3);
len3 = stlen(str3);
for(i=0;i<=len1;i++)
{
match = 1;
for(j=0;j<=len2;j++)
if(str2[j]!=str1[i+j])
{
match = 0;
break;
}
if(match)
{
for(k=0,j=i+len2+1;j<=len1;j++,k++)
temp[k] = str1[j];
temp[k] = ‘′;
for(j=0;j<=len3;j++)
str1[i+j] = str3[j];
str1[i+j] = ‘′;
stcat(str1,temp);
len1 = len1 – len2 +len3;
i = i + j;
}
}
printf(“nnt OUTPUT IS…: “);
puts(str1);
getch();
}
Download exe and source code here.

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Author Name :
Ranjith

Total : 4 Comments

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4 Responses to “To replace a word by another word in a given string”

  1. soha sheikh says:
    December 28, 2011 at 8:06 am

    mujhe koi ye program smjha do,means every step kaise kaise ho rha ek array box example me le k plz plz!
    Q-wap input a string then find out occurence of each character?
    void main()
    {
    int i ,j,k,c;
    printf(“enter a string”);
    gets(a);
    for(i=0;i<strlen(a);i++)
    {
    c=1;
    for(j=i+1;j<strlen(a);j++)
    {
    c++;
    for(k=j;k<strlen(a);k++)
    a[k]=a[k+1];
    j–;
    }
    }
    printf("\n%c=%dtimes",a[i],c);
    }
    getch();
    }

  2. faras raoof says:
    January 12, 2012 at 8:02 pm

    buddy, try “debugging” using the “watch” option .if you are using turbo C, go to menu bar, select debugger , add “watch” values and have the pleasure of learning it yourself :)

  3. faras raoof says:
    January 12, 2012 at 8:07 pm

    #include
    #include
    #include
    void main()
    {
    int k=0,i,j,l,t;
    char a[20],b[20],c[20],d[20];
    char name[5][6];
    clrscr();
    printf(“enter the main string\n”);
    gets(a);
    printf(“enter the word to be deleted\n”);
    gets(b);
    printf(“enter the word to be replaced with\n”);
    gets(c);
    l=strlen(a);
    for(i=0;i<l;i++)
    {
    j=0;
    while(a[i]!=' '&& a[i]!='')
    {
    d[j]=a[i];
    i++;
    j++;
    }
    d[j]='';
    strcpy(name[k],d);
    k++;
    }
    for(k=0;k<5;k++)
    {
    t= strcmp(name[k],b);
    if(t==0)
    {
    strcpy(name[k],c);
    }
    }
    for(k=0;k<5;k++)
    {
    printf(" %s",name[k]);
    }
    getch();
    }

  4. faras raoof says:
    January 12, 2012 at 10:14 pm

    and by the way , that program uses the concept of string as a two dimensional array . the limitation is that you got to decide the maximum number of letters in the word and the exact number of words in the sentence at the beginning of the program ……in the above case, being 5 words(exactly) and maximum of 6 letters in the word.

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