复制值成整数

Question

我与值txt文件：

1 -200 3 4

如何获得的长度输入（以便我可以告诉代码在哪里停止）并在空白之前复制值？即我想A = 1，B = -200，C = 3，d = 4（我已尝试的方法中似乎只是在形式添加值：-2 + 0 + 0 = -2）

的代码我工作：

char buffer[100]; 
char c; 
int x = 0; 
while (fgets(buffer, sizeof(buffer), stdin) != NULL){ // while stdin isn't empty 
    for (int i = 0; i < 10; i++){ // loop through integer i (need to change 
            //i < 10 to be size of the line) 
     if (strchr(buffer, c) != NULL){ 
     // if there is a white space 
     // add the value of buffer to x 
      x += buffer[i] - '0'; 
     } 
    } 
    } 

Answer 1

试试这个，它并没有增加4个数字的约束：

char buffer[100], 
char bufferB[100]; //holds the individual numbers 
int x = 0, i = 0, j = 0; 
//you dont need a while in fgets, because it will never be NULL (the '\n' will always be read) 
if (fgets(buffer, sizeof(buffer), stdin) != NULL){ 
    while(buffer[i] != '\n' && buffer[i] != '\0'){ 
     //If we have not occured the white space store the character 
     if(buffer[i] != ' '){ 
      bufferB[j] = buffer[i]; 

      j++; 
     } 
     else{ //we have found the white space so now make the string to an int and add to x 
      bufferB[j] = '\0'; //make it a string 

      x += atoi(bufferB); 

      j = 0; 
     } 

     i++; 
    } 

    //The last number 
    if(j != 0){ 
     bufferB[j] = '\0'; 

     x += atoi(bufferB); 
    } 
}