str1.c

#include<stdio.h>

void hmw(char str[]){
	int i, j = 0;
	for(i = 0; str[i] != '\0'; i++){
		if(str[i] == ' '){
			j++;}
	}
	j++;
	printf("The sentence contain %d words.\n", j);
}

void lew(char str0[]){
	int x, y, n=0, m=0;
	int *p[50]={0};
	for(x = 0; str0[x] != '\0'; x++){
		if(str0[x] == ' '){
            *(p+n) = x - m;
            m = x;
            m++;
            n++;
        }
    }
	*(p+n) = x - m;
	printf("\nThe length of each word is:\n");
	for(y = 0; y < n + 1; y++){
		printf("%d ", *(p+y));}
	printf("\n");
}

void ncl(char str2[]){
    int a, b, d=0, k, t[50]={0};
    char c[50]={0};
    for(a = 0; str2[a] != '\0'; a++){
        if(str2[a] == ' ' || str2[a] == '0'){
            continue;
        }
        for(b = a + 1; str2[b] != '\0'; b++){
            if(str2[a] == str2[b]){
                str2[b] = '0';
                t[d]++;
            }
        }
        c[d] = str2[a];
        t[d]++;
        d++;
        str2[a] = 0;
    }
    printf("\nThis is the frequency of each symbol appear:\n");
    for(k = 0; c[k] != '\0'; k++){
        printf("%c:%d\n", c[k], t[k]);
    }
}

int main(){
    char str1[100];
    printf("Please input your sentence:\n");
    gets(str1);

    hmw(str1);
    lew(str1);
    ncl(str1);

    return 0;
}