Go Learning Path: The difference between Println and Printf

Println and printf are common methods in the FMT package, what is the difference between the two functions when you need to print the information?

Attached code

package mainimport (    "time"    "fmt")const (    Man = 1    Female = 2)func main(){    timer := time.Now().Unix()    if(timer % Female == 0){        fmt.Println("%d is Female", timer)        fmt.Printf("%d is Female", timer)    }else{        fmt.Println("%d is Man", timer)        fmt.Printf("%d is Man", timer)    }}

Run results

%d is Man 1529049077 // println输出结果1529049077 is Man // printf输出结果

Results

Printf : Can print out a formatted string, Println not;

Make a little change under

package mainimport "fmt"const (    StrN = "123"    IntN = 123)func main(){    fmt.Println(StrN)    fmt.Printf("%s\n",StrN)    fmt.Printf(StrN)    fmt.Println(IntN)    fmt.Printf("%d\n",IntN)    fmt.Printf(IntN)}

Results

Reason

See the source content, I believe you generally understand the difference between the two functions bar ~;
Bottom line: println will output according to your input format, printf needs to format output and output format;

Author: not moving Peak
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