1
2
NSString *tempA = @"123";
NSString *tempB = @"456";

字符串拼接

1
NSString *newString = [NSString stringWithFormat:@"%@%@",tempA,tempB];

字符转int

1
int intString = [newString intValue];

int转字符

1
NSString *stringInt = [NSString stringWithFormat:@"%d",intString];

字符转float

1
float floatString = [newString floatValue];

float转字符

1
NSString *stringFloat = [NSString stringWithFormat:@"%f",intString];