Printf（％s）打印0

Question

I have this command in my project (in C):

int addFinalDataStr(char* value) 
{
    fprintf(objFile,"%-7.7s\n",value);
    fflush(objFile);
}

When I call this method with the value like: "60100" , it prints "60100" with no problems, but when i call it with a string like "37777777773" it just prints out "0" .

Answer 1

我认为您的错误是由与其他编译器（我建议您为GCC编译器）检查编译器引起的，并查看其是否有效。

Answer 2

There are 2 issues

printf("%-7.7s\n", "60100");
// should print "60100  ", not "60100" as OP states

printf("%-7.7s\n", "37777777773");
// should print "3777777", not "0".

It appears the compiler is not compliant or something critical is missing from the post.