What does %.2 mean in C language?

%.2f in C language is a format modifier, used to format floating point number output: % indicates the beginning of the format modifier; . indicates the decimal point position; 2 indicates that two decimal places are retained after the decimal point; f Indicates that the data type is a floating point number.

What does %.2f mean in c language?

%.2f in the C language is a format modifier used to format floating point numbers for output. The

% symbol indicates the beginning of a format modifier. . indicates the position of the decimal point. 2 means keeping two decimal places after the decimal point. f indicates that the data type to be formatted is a floating point number.

Thus, %.2f represents the following format:

• Retain two decimal places after the decimal point
• Right-align numbers
• If the number is negative, add a negative sign at the front

For example:

<code class="c">#include <stdio.h>

int main() {
    float num = 12.345;
    printf("格式化后的数字：%.2f\n", num);
    return 0;
}</code>

Output:

<code>格式化后的数字：12.35</code>

In this example, The %.2f formatter outputs the floating point number num as a right-justified number with two decimal places after the decimal point.

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