题解 | 复读机

#include <stdio.h>
#include <stdlib.h>
int include_dot(char* str) {
	for (int i = 0;str[i] != '\0'; i++) {
	
		if (str[i] == '.') {
			return 1;
		}
	}
	return 0;
}
int main() {
	char gather[5][20];
	for (int i = 0; i < 5; i++) {
		scanf("%s", &gather[i]);
	}
	for (int i = 0; i < 5; i++) {
		if (include_dot(gather[i])) {
			float num = atof(gather[i]);
			printf("%.1f", num);
		}
		else {
			for (int j = 0; gather[i][j] != '\0'; j++) {
				printf("%c", gather[i][j]);
			}
		}
		printf("\n");
	}
	return 0;
}