Correct

#include<stdio.h>
#include<string.h>

int main()
{
    int i, j, t;
    char sentence[10000];
    char x;
    scanf("%d", &t);
    for(i = 1; i <= t; i++)
    {
        int n = 0;

        getchar();
        gets(sentence);
        scanf("%c", &x);

        int len = strlen(sentence);

        for(j = 0; j < len; j++)
        {
            if (sentence[j] == x)
            {
                n++;
            }
        }


    if(n==0)
        printf("'%c' is not present\n", x);
    else
        printf("Occurrence of '%c' in '%s' = %d\n", x, sentence, n);
    }

    return 0;
}