#include<stdio.h>
#include<conio.h>
int countchtr(char [],char);
void main()
{
char a[20],ch;
int c;
printf("enter the string :");
gets(a);
printf("enter the char. to be :");
scanf("%c",&ch);
c=countchtr(a,ch);
printf("%d",c);
getch();
}
int countchtr(char a[],char ch)
{
int count=0;
for(int i=0;a[i]!='\0';i++)
{
  if(a[i]==ch)
  count++;
}
return(count);
}



thank u

#include<stdio.h>
#include<conio.h>
#include<string.h>
int countch(char string[], char );
int main()
{
    char str[30],c;
    int i=0,s;
    printf("\nEnter the string ");
    while((str[i++]=getchar())!='\n');
    printf("\nEnter the word you want to search ");
    scanf("%c",&c);
    s = countch(str,c);
    if(s !=0)
    {
	 printf("\nTHe total occurence of that word in the string
is %d",s);
    }
    else
    {
	printf("\nThe word is not present in the string ");
    }
    getch();
}

int countch(char str[], char c)
{
    int i,sum=0,j,d;
    i = strlen(str);
    for(j=0;j<i;j++)
    {               if(str[j]==c)
                    {
					sum++;
		    }
}
return (sum);
}