为什么我在打印计数值之前在这里得到一个新行? [英] Why am I getting a new line here before print count value?

问题描述

这是我的代码.这是我想要的输出:

Here's my code. Here's my desired output:

Occurrence of 'l' in Hello world = 3

但是我在 hello world 之后得到了一条新线路.我该如何解决这个问题?

But I am getting a new line after hello world. How I can fix this?

#include<stdio.h>
#include<string.h>
int main (void){
    char first_line[1000];
    char second_line[2];
    int i,n,j;
    int count=0,flag=0;
    fgets(first_line, 1000, stdin);
    fgets(second_line, 2, stdin);
    for(i=0; i<strlen(first_line); i++)
    {
        if(second_line[0]==first_line[i])
        {
            flag=1;
            count++;
        }
    }
    if(flag==1)
        printf("Occurrence of '%c' in %s = %d",second_line[0],first_line,count);

    else
        printf("%c isn't present",second_line[0]);

    return 0;
}

推荐答案

根据C标准中fgets函数的描述(7.21.7.2 fgets函数)

According to the description of the function fgets in the C Standard (7.21.7.2 The fgets function)

2 fgets 函数读取最多比读取的数量少 1由流指向的流中的 n 指定的字符s 指向的数组.在 a 之后不会读取额外的字符换行符(保留) 或在文件结束之后.一个空字符在读入的最后一个字符后立即写入数组.

2 The fgets function reads at most one less than the number of characters specified by n from the stream pointed to by stream into the array pointed to by s. No additional characters are read after a new-line character (which is retained) or after end-of-file. A null character is written immediately after the last character read into the array.

要删除换行符，您可以编写例如

To remove the new line character you can write for example

first_line[ strcspn( first_line, "\n" ) ] = '\0';

这篇关于为什么我在打印计数值之前在这里得到一个新行?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！