C Program to Find First Occurrence of a Word in a String

C Program to Find First Occurrence of a Word in a String

C program to find the last occurrences of a word in a string; Through this tutorial, we will learn how to find the last occurrences of a word in a string using for loop, while loop, and functions in c programs.

Programs to Find Last Occurrence of a Word in a String in C

  • C Program to Find Last Occurrence of a Word in a String using For Loop
  • C Program to Find Last Occurrence of a Word in a String using While Loop
  • C Program to Find Last Occurrence of a Word in a String using Function

C Program to Find Last Occurrence of a Word in a String using For Loop

/* C Program to Find First Occurrence of a Word in a String */
 
#include <stdio.h>
 
int main()
{
  	char str[100], word[100];
  	int i, j, Flag;
 
  	printf("\n Please Enter any String :  ");
  	gets(str);
  	
    printf("Enter word to be searched: ");
  	gets(word);
	     	   	
  	for(i = 0; str[i] != '
/* C Program to Find First Occurrence of a Word in a String */
 
#include <stdio.h>
 
int main()
{
  	char str[100], word[100];
  	int i, j, Flag;
 
  	printf("\n Please Enter any String :  ");
  	gets(str);
  	
    printf("Enter word to be searched: ");
  	gets(word);
	     	   	
  	for(i = 0; str[i] != '
/* C Program to Find First Occurrence of a Word in a String */
#include <stdio.h>
int main()
{
char str[100], word[100];
int i, j, Flag;
printf("\n Please Enter any String :  ");
gets(str);
printf("Enter word to be searched: ");
gets(word);
for(i = 0; str[i] != '\0'; i++)
{
if(str[i] == word[0])
{
Flag = 1;
for(j = 0; word[j] != '\0'; j++)
{
if(str[i + j] != word[j])
{
Flag = 0;
break;
}
}	
}
if(Flag == 1)
{
break;
} 
}
if(Flag == 0)
{
printf("\n Sorry!! We haven't found the Word '%s' ", word);
}
else
{
printf("\n We found '%s' at position %d ", word, i + 1);
}	
return 0;
}
'; i++) { if(str[i] == word[0]) { Flag = 1; for(j = 0; word[j] != '
/* C Program to Find First Occurrence of a Word in a String */
#include <stdio.h>
int main()
{
char str[100], word[100];
int i, j, Flag;
printf("\n Please Enter any String :  ");
gets(str);
printf("Enter word to be searched: ");
gets(word);
for(i = 0; str[i] != '\0'; i++)
{
if(str[i] == word[0])
{
Flag = 1;
for(j = 0; word[j] != '\0'; j++)
{
if(str[i + j] != word[j])
{
Flag = 0;
break;
}
}	
}
if(Flag == 1)
{
break;
} 
}
if(Flag == 0)
{
printf("\n Sorry!! We haven't found the Word '%s' ", word);
}
else
{
printf("\n We found '%s' at position %d ", word, i + 1);
}	
return 0;
}
'; j++) { if(str[i + j] != word[j]) { Flag = 0; break; } } } if(Flag == 1) { break; } } if(Flag == 0) { printf("\n Sorry!! We haven't found the Word '%s' ", word); } else { printf("\n We found '%s' at position %d ", word, i + 1); } return 0; }
'; i++) { if(str[i] == word[0]) { Flag = 1; for(j = 0; word[j] != '
/* C Program to Find First Occurrence of a Word in a String */
 
#include <stdio.h>
 
int main()
{
  	char str[100], word[100];
  	int i, j, Flag;
 
  	printf("\n Please Enter any String :  ");
  	gets(str);
  	
    printf("Enter word to be searched: ");
  	gets(word);
	     	   	
  	for(i = 0; str[i] != '
/* C Program to Find First Occurrence of a Word in a String */
#include <stdio.h>
int main()
{
char str[100], word[100];
int i, j, Flag;
printf("\n Please Enter any String :  ");
gets(str);
printf("Enter word to be searched: ");
gets(word);
for(i = 0; str[i] != '\0'; i++)
{
if(str[i] == word[0])
{
Flag = 1;
for(j = 0; word[j] != '\0'; j++)
{
if(str[i + j] != word[j])
{
Flag = 0;
break;
}
}	
}
if(Flag == 1)
{
break;
} 
}
if(Flag == 0)
{
printf("\n Sorry!! We haven't found the Word '%s' ", word);
}
else
{
printf("\n We found '%s' at position %d ", word, i + 1);
}	
return 0;
}
'; i++) { if(str[i] == word[0]) { Flag = 1; for(j = 0; word[j] != '
/* C Program to Find First Occurrence of a Word in a String */
#include <stdio.h>
int main()
{
char str[100], word[100];
int i, j, Flag;
printf("\n Please Enter any String :  ");
gets(str);
printf("Enter word to be searched: ");
gets(word);
for(i = 0; str[i] != '\0'; i++)
{
if(str[i] == word[0])
{
Flag = 1;
for(j = 0; word[j] != '\0'; j++)
{
if(str[i + j] != word[j])
{
Flag = 0;
break;
}
}	
}
if(Flag == 1)
{
break;
} 
}
if(Flag == 0)
{
printf("\n Sorry!! We haven't found the Word '%s' ", word);
}
else
{
printf("\n We found '%s' at position %d ", word, i + 1);
}	
return 0;
}
'; j++) { if(str[i + j] != word[j]) { Flag = 0; break; } } } if(Flag == 1) { break; } } if(Flag == 0) { printf("\n Sorry!! We haven't found the Word '%s' ", word); } else { printf("\n We found '%s' at position %d ", word, i + 1); } return 0; }
'; j++) { if(str[i + j] != word[j]) { Flag = 0; break; } } } if(Flag == 1) { break; } } if(Flag == 0) { printf("\n Sorry!! We haven't found the Word '%s' ", word); } else { printf("\n We found '%s' at position %d ", word, i + 1); } return 0; }

The Output of the above c program; as follows:

Please Enter any String :  hello my dear friend
Enter word to be searched: dear
We found 'dear' at position 10 

C Program to Find Last Occurrence of a Word in a String using While Loop

/* C Program to Find First Occurrence of a Word in a String */
 
#include <stdio.h>
 
int main()
{
  	char str[100], word[100];
  	int i, j, Flag;
 
  	printf("\n Please Enter any String :  ");
  	gets(str);
  	
    printf("Enter word to be searched: ");
  	gets(word);
	     	   	
  	for(i = 0; str[i] != '
/* C Program to Find First Occurrence of a Word in a String */
 
#include <stdio.h>
 
int main()
{
  	char str[100], word[100];
  	int i, j, Flag;
 
  	printf("\n Please Enter any String :  ");
  	gets(str);
  	
    printf("Enter word to be searched: ");
  	gets(word);
	     	   	
  	for(i = 0; str[i] != '
/* C Program to Find First Occurrence of a Word in a String */
#include <stdio.h>
int main()
{
char str[100], word[100];
int i, j, Flag;
printf("\n Please Enter any String :  ");
gets(str);
printf("Enter word to be searched: ");
gets(word);
for(i = 0; str[i] != '\0'; i++)
{
if(str[i] == word[0])
{
Flag = 1;
for(j = 0; word[j] != '\0'; j++)
{
if(str[i + j] != word[j])
{
Flag = 0;
break;
}
}	
}
if(Flag == 1)
{
break;
} 
}
if(Flag == 0)
{
printf("\n Sorry!! We haven't found the Word '%s' ", word);
}
else
{
printf("\n We found '%s' at position %d ", word, i + 1);
}	
return 0;
}
'; i++) { if(str[i] == word[0]) { Flag = 1; for(j = 0; word[j] != '
/* C Program to Find First Occurrence of a Word in a String */
#include <stdio.h>
int main()
{
char str[100], word[100];
int i, j, Flag;
printf("\n Please Enter any String :  ");
gets(str);
printf("Enter word to be searched: ");
gets(word);
for(i = 0; str[i] != '\0'; i++)
{
if(str[i] == word[0])
{
Flag = 1;
for(j = 0; word[j] != '\0'; j++)
{
if(str[i + j] != word[j])
{
Flag = 0;
break;
}
}	
}
if(Flag == 1)
{
break;
} 
}
if(Flag == 0)
{
printf("\n Sorry!! We haven't found the Word '%s' ", word);
}
else
{
printf("\n We found '%s' at position %d ", word, i + 1);
}	
return 0;
}
'; j++) { if(str[i + j] != word[j]) { Flag = 0; break; } } } if(Flag == 1) { break; } } if(Flag == 0) { printf("\n Sorry!! We haven't found the Word '%s' ", word); } else { printf("\n We found '%s' at position %d ", word, i + 1); } return 0; }
'; i++) { if(str[i] == word[0]) { Flag = 1; for(j = 0; word[j] != '
/* C Program to Find First Occurrence of a Word in a String */
 
#include <stdio.h>
 
int main()
{
  	char str[100], word[100];
  	int i, j, Flag;
 
  	printf("\n Please Enter any String :  ");
  	gets(str);
  	
    printf("Enter word to be searched: ");
  	gets(word);
	     	   	
  	for(i = 0; str[i] != '
/* C Program to Find First Occurrence of a Word in a String */
#include <stdio.h>
int main()
{
char str[100], word[100];
int i, j, Flag;
printf("\n Please Enter any String :  ");
gets(str);
printf("Enter word to be searched: ");
gets(word);
for(i = 0; str[i] != '\0'; i++)
{
if(str[i] == word[0])
{
Flag = 1;
for(j = 0; word[j] != '\0'; j++)
{
if(str[i + j] != word[j])
{
Flag = 0;
break;
}
}	
}
if(Flag == 1)
{
break;
} 
}
if(Flag == 0)
{
printf("\n Sorry!! We haven't found the Word '%s' ", word);
}
else
{
printf("\n We found '%s' at position %d ", word, i + 1);
}	
return 0;
}
'; i++) { if(str[i] == word[0]) { Flag = 1; for(j = 0; word[j] != '
/* C Program to Find First Occurrence of a Word in a String */
#include <stdio.h>
int main()
{
char str[100], word[100];
int i, j, Flag;
printf("\n Please Enter any String :  ");
gets(str);
printf("Enter word to be searched: ");
gets(word);
for(i = 0; str[i] != '\0'; i++)
{
if(str[i] == word[0])
{
Flag = 1;
for(j = 0; word[j] != '\0'; j++)
{
if(str[i + j] != word[j])
{
Flag = 0;
break;
}
}	
}
if(Flag == 1)
{
break;
} 
}
if(Flag == 0)
{
printf("\n Sorry!! We haven't found the Word '%s' ", word);
}
else
{
printf("\n We found '%s' at position %d ", word, i + 1);
}	
return 0;
}
'; j++) { if(str[i + j] != word[j]) { Flag = 0; break; } } } if(Flag == 1) { break; } } if(Flag == 0) { printf("\n Sorry!! We haven't found the Word '%s' ", word); } else { printf("\n We found '%s' at position %d ", word, i + 1); } return 0; }
'; j++) { if(str[i + j] != word[j]) { Flag = 0; break; } } } if(Flag == 1) { break; } } if(Flag == 0) { printf("\n Sorry!! We haven't found the Word '%s' ", word); } else { printf("\n We found '%s' at position %d ", word, i + 1); } return 0; }

The Output of the above c program; as follows:

Please Enter any String :  welcome to programming world
Enter word to be searched: to
We found 'to' at position 9 

C Program to Find Last Occurrence of a Word in a String using Function

#include <stdio.h>
#include <string.h> 
int check(char *s,char *w)
{
    int n,a[1000],i,j,k=0,l,found=0,t=0;
    
	for(i=0;s[i];i++)
    {
    	if(s[i]==' ')
    	{
    		a[k++]=i;
		}
	}
	a[k++]=i;
	j=0;
	for(i=0;i<k;i++)
	{
		n=a[i]-j;
		if(n==strlen(w))
		{
			t=0;
			for(l=0;w[l];l++)
			{
				if(s[l+j]==w[l])
				{
					t++;
				}
			}
			
		}
		if(t==strlen(w))
		{
				found=1;
				break;
		}
		j=a[i]+1;
	}
 	if(found)
	return j;
	 
    return -1;
 
	
}
 
int main()
{
    char s[1000],w[1000]; 
	int n; 
 
    printf("Enter  the string : ");
    gets(s);
    printf("Enter word to be searched: ");
    gets(w);
    n=check(s,w);
    if(n>=0)
     printf("word %s  is first occurred at location:%d ",w,n);
    else
     printf("word is not occurred in the string ");
}     

The Output of the above c program; as follows:

Enter  the string : hello dear good morning
Enter word to be searched: good
word good  is first occurred at location:11 

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AuthorAdmin

My name is Devendra Dode. I am a full-stack developer, entrepreneur, and owner of Tutsmake.com. I like writing tutorials and tips that can help other developers. I share tutorials of PHP, Python, Javascript, JQuery, Laravel, Livewire, Codeigniter, Node JS, Express JS, Vue JS, Angular JS, React Js, MySQL, MongoDB, REST APIs, Windows, Xampp, Linux, Ubuntu, Amazon AWS, Composer, SEO, WordPress, SSL and Bootstrap from a starting stage. As well as demo example.

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