char* delChar(char *inStr, char inCh) {
    int jump = 0, length = strlen(inStr);
    for (int i=0; i<=length; ++i) {
        if (inStr == inCh) {
            ++jump;
            continue;
        }
        inStr = inStr;
    }
    for (int i=length-jump+1; i<=length; ++i) inStr='\0';
    return inStr;
}

int j=0;
for (i=0; i<strlen(string); i++)
{
   if (string(i)!=*letter)
   {
     string1(j)=string(i);
     j++;
   }
   else
    counter++
}
string1(j)='\0';

#include <stdio.h>
#include <string.h>
#define length 3
void scan_parameters (char *string,char *letter);
int removeCharacter(char *string, char letter);
int main()
{
	char string={0},letter;
	int result;
	scan_parameters(string,letter);
	removeCharacter(string,letter);
	printf("\n\n");
	printf("The string after ruuning program is:");
	puts(string);
	getch();
	return 0;
}
void scan_parameters (char *string,char *letter)
{
	//scan parameters
	do
	{
		printf("Enter text up to %d letters: ",length);
		flushall();
		gets(string);
		if (strlen(string)>length)
			printf("\nInput is too big, please follow guidelines\n");
	}
	while (strlen(string)>length);
	do
	{
		printf("\nEnter charcter to remove: ");
		flushall();
		gets(letter);
		if (strlen(letter)>1)
			printf("\nWe asked for charcter, charcter is a 1 size string\n");
	}
	while (strlen(letter)>1);
	//printing parameters
	puts(string);
	printf("letter to remove ");
	puts(letter);
}

int removeCharacter(char *string, char *letter)
{
	int j=0,i,counter=0;
	for (i=0; i<strlen(string); i++)
	{
	   if (string!=*letter)
	   {
		 string=string;
		 j++;
	   }
	   else
		counter++;
	}
	string='\0';
	printf("apperance of letter %c in the string is %d",*letter,counter);
	return counter;
}

#include <stdio.h>
#include <string.h>
void recRemove(char* str, char rem);
void replace(char* str,char rem)
{
	int i = 0;
	while(str[i] != '\0')
	{
		str[i] = str[i+1];
		i++;
	}
	str[i] = '\0';
	recRemove(str,rem);//for duplicates
}
void recRemove(char* str, char rem)
{
	if(*str == '\0')
		return;
	else if(*str == rem)
		replace(str,rem);
	else
		recRemove(str + 1,rem);
}
int main()
{
	int SIZE = 40;
	char* input = (char*)malloc(sizeof(int) * SIZE);
	char rem;
	printf("insert string\n");
	fgets(input,SIZE,stdin);
	printf("insert char to remove\n");
	scanf("%c",&rem);
	recRemove(input,rem);
	printf("output %s",input);
	free(input);
	return 1;
}