#include<stdio.h>

char * chr(char * s, char c){

        if(*s==c)
            return s;
        else
            return NULL;

}

int main(){
    char string[20];
    char jedanKarakter;
    printf("unesi string: \n");
    scanf("%s", string);
    printf("unesi karakter: \n");
    scanf(" %c", &jedanKarakter);


    char * temp = chr(string,jedanKarakter);
    if(temp != NULL){
        printf("karakter se nalazi u niski\n");
    }
    else{
        printf("karakter se ne nalazi u niski\n");
    }

    return 0;
}