Integer: character
Internationalorganizations (same as international organizations)
short
long
Floating point type: float (single precision)
Double (double precision)
Second, floating-point data is transferred to a string.
tea
str[30]；
//Define a character array to store data.
double；twofold
d = 123.456；
//define a floating-point variable d
Sprintf (string, "%f",
d
);
//The format string is the same as that of printf ().
sprintf(str，" %.2f "，
d
);
//Keep two decimal places, and round the third place.
Third, integer data is transferred to a string.
tea
str[30]；
Internationalorganizations (same as international organizations)
I = 123；
sprintf(str，
" %d "，
I
);
Data between 4.0 and 9 are converted into characters.
In C language, when storing character data, what is actually stored is the ascii value of the character. The ascii corresponding to the characters "0" to "9" is continuous, and its value is 48-57. Therefore, when the value of 0-9 is converted into characters, just add' 0', such as:
tea
ch；
Internationalorganizations (same as international organizations)
Me;
I = 1；
ch=i+'0 '
printf("ch=%c
ascii=%d "，
ch，
Lord of honor
);
//Press %c to output, that is, the character 1, and press %d to output the ascii value of 49.